55332551 has 16 divisors (see below), whose sum is σ = 60115200. Its totient is φ = 50803200.

The previous prime is 55332539. The next prime is 55332559. The reversal of 55332551 is 15523355.

It is a cyclic number.

It is not a de Polignac number, because 55332551 - 2¹⁰ = 55331527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55332559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54335 + ... + 55343.

It is an arithmetic number, because the mean of its divisors is an integer number (3757200).

Almost surely, 2^55332551 is an apocalyptic number.

55332551 is a deficient number, since it is larger than the sum of its proper divisors (4782649).

55332551 is a wasteful number, since it uses less digits than its factorization.

55332551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 11250, while the sum is 29.

The square root of 55332551 is about 7438.5852821622. The cubic root of 55332551 is about 381.0601765413.

The spelling of 55332551 in words is "fifty-five million, three hundred thirty-two thousand, five hundred fifty-one".