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55708057 = 192932003
BaseRepresentation
bin1101010010000…
…0100110011001
310212211021002101
43110200212121
5103230124212
65310003401
71244340106
oct324404631
9125737071
1055708057
112949a319
12167a6561
13b706562
147581aad
154d56157
hex3520999

55708057 has 4 divisors (see below), whose sum is σ = 58640080. Its totient is φ = 52776036.

The previous prime is 55708049. The next prime is 55708069. The reversal of 55708057 is 75080755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55708057 - 23 = 55708049 is a prime.

It is a super-2 number, since 2×557080572 = 6206775229430498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55708087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465983 + ... + 1466020.

It is an arithmetic number, because the mean of its divisors is an integer number (14660020).

Almost surely, 255708057 is an apocalyptic number.

It is an amenable number.

55708057 is a deficient number, since it is larger than the sum of its proper divisors (2932023).

55708057 is a wasteful number, since it uses less digits than its factorization.

55708057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932022.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 55708057 is about 7463.7830220338. The cubic root of 55708057 is about 381.9202363545.

The spelling of 55708057 in words is "fifty-five million, seven hundred eight thousand, fifty-seven".

Divisors: 1 19 2932003 55708057