55372431 has 8 divisors (see below), whose sum is σ = 77040000. Its totient is φ = 35309912.

The previous prime is 55372411. The next prime is 55372453. The reversal of 55372431 is 13427355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55372431 - 2⁶ = 55372367 is a prime.

It is a super-3 number, since 3×55372431³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55372411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401181 + ... + 401318.

It is an arithmetic number, because the mean of its divisors is an integer number (9630000).

Almost surely, 2^55372431 is an apocalyptic number.

55372431 is a deficient number, since it is larger than the sum of its proper divisors (21667569).

55372431 is a wasteful number, since it uses less digits than its factorization.

55372431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802525.

The product of its digits is 12600, while the sum is 30.

The square root of 55372431 is about 7441.2654165807. The cubic root of 55372431 is about 381.1517021148.

Adding to 55372431 its reverse (13427355), we get a palindrome (68799786).

The spelling of 55372431 in words is "fifty-five million, three hundred seventy-two thousand, four hundred thirty-one".