55655151 has 4 divisors (see below), whose sum is σ = 74206872. Its totient is φ = 37103432.

The previous prime is 55655143. The next prime is 55655177. The reversal of 55655151 is 15155655.

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

It is a cyclic number.

It is not a de Polignac number, because 55655151 - 2³ = 55655143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55655111) 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, 9275856 + ... + 9275861.

It is an arithmetic number, because the mean of its divisors is an integer number (18551718).

Almost surely, 2^55655151 is an apocalyptic number.

55655151 is a deficient number, since it is larger than the sum of its proper divisors (18551721).

55655151 is a wasteful number, since it uses less digits than its factorization.

55655151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18551720.

The product of its digits is 18750, while the sum is 33.

The square root of 55655151 is about 7460.2379988845. The cubic root of 55655151 is about 381.7992947110.

The spelling of 55655151 in words is "fifty-five million, six hundred fifty-five thousand, one hundred fifty-one".