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55697745 = 3510513533
BaseRepresentation
bin1101010001111…
…0000101010001
310212210201221110
43110132011101
5103224311440
65305443533
71244265045
oct324360521
9125721843
1055697745
11294925a4
12167a05a9
13b70195c
14757c025
154d53080
hex351e151

55697745 has 16 divisors (see below), whose sum is σ = 89226432. Its totient is φ = 29668800.

The previous prime is 55697737. The next prime is 55697767. The reversal of 55697745 is 54779655.

It is not a de Polignac number, because 55697745 - 23 = 55697737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55697694 and 55697703.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13999 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (5576652).

Almost surely, 255697745 is an apocalyptic number.

It is an amenable number.

55697745 is a deficient number, since it is larger than the sum of its proper divisors (33528687).

55697745 is a wasteful number, since it uses less digits than its factorization.

55697745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592.

The product of its digits is 1323000, while the sum is 48.

The square root of 55697745 is about 7463.0921875587. The cubic root of 55697745 is about 381.8966694193.

The spelling of 55697745 in words is "fifty-five million, six hundred ninety-seven thousand, seven hundred forty-five".

Divisors: 1 3 5 15 1051 3153 3533 5255 10599 15765 17665 52995 3713183 11139549 18565915 55697745