55364431 has 4 divisors (see below), whose sum is σ = 55407664. Its totient is φ = 55321200.

The previous prime is 55364411. The next prime is 55364443. The reversal of 55364431 is 13446355.

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 55364431 - 2¹⁵ = 55331663 is a prime.

It is a super-2 number, since 2×55364431² = 6130440439907522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55364393 and 55364402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55364411) 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, 19635 + ... + 22276.

It is an arithmetic number, because the mean of its divisors is an integer number (13851916).

Almost surely, 2^55364431 is an apocalyptic number.

55364431 is a deficient number, since it is larger than the sum of its proper divisors (43233).

55364431 is a wasteful number, since it uses less digits than its factorization.

55364431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43232.

The product of its digits is 21600, while the sum is 31.

The square root of 55364431 is about 7440.7278541820. The cubic root of 55364431 is about 381.1333454439.

The spelling of 55364431 in words is "fifty-five million, three hundred sixty-four thousand, four hundred thirty-one".