55456431 has 8 divisors (see below), whose sum is σ = 78291504. Its totient is φ = 34796160.

The previous prime is 55456399. The next prime is 55456441. The reversal of 55456431 is 13465455.

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

It is not a de Polignac number, because 55456431 - 2⁵ = 55456399 is a prime.

It is a super-2 number, since 2×55456431² = 6150831478515522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55456392 and 55456401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55456441) 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, 543640 + ... + 543741.

It is an arithmetic number, because the mean of its divisors is an integer number (9786438).

Almost surely, 2^55456431 is an apocalyptic number.

55456431 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55456431 is a deficient number, since it is larger than the sum of its proper divisors (22835073).

55456431 is a wasteful number, since it uses less digits than its factorization.

55456431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087401.

The product of its digits is 36000, while the sum is 33.

The square root of 55456431 is about 7446.9074789472. The cubic root of 55456431 is about 381.3443404983.

The spelling of 55456431 in words is "fifty-five million, four hundred fifty-six thousand, four hundred thirty-one".