55501151 has 4 divisors (see below), whose sum is σ = 55601352. Its totient is φ = 55400952.

The previous prime is 55501091. The next prime is 55501177. The reversal of 55501151 is 15110555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55501151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55501181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49265 + ... + 50378.

It is an arithmetic number, because the mean of its divisors is an integer number (13900338).

Almost surely, 2^55501151 is an apocalyptic number.

55501151 is a deficient number, since it is larger than the sum of its proper divisors (100201).

55501151 is an equidigital number, since it uses as much as digits as its factorization.

55501151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100200.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 55501151 is about 7449.9094625371. The cubic root of 55501151 is about 381.4468181648.

The spelling of 55501151 in words is "fifty-five million, five hundred one thousand, one hundred fifty-one".