55359951 has 4 divisors (see below), whose sum is σ = 73813272. Its totient is φ = 36906632.

The previous prime is 55359949. The next prime is 55359959. The reversal of 55359951 is 15995355.

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 55359951 - 2¹ = 55359949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55359959) 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, 9226656 + ... + 9226661.

It is an arithmetic number, because the mean of its divisors is an integer number (18453318).

Almost surely, 2^55359951 is an apocalyptic number.

55359951 is a deficient number, since it is larger than the sum of its proper divisors (18453321).

55359951 is a wasteful number, since it uses less digits than its factorization.

55359951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18453320.

The product of its digits is 151875, while the sum is 42.

The square root of 55359951 is about 7440.4268022742. The cubic root of 55359951 is about 381.1230649358.

The spelling of 55359951 in words is "fifty-five million, three hundred fifty-nine thousand, nine hundred fifty-one".