55465231 has 4 divisors (see below), whose sum is σ = 57254464. Its totient is φ = 53676000.

The previous prime is 55465211. The next prime is 55465243. The reversal of 55465231 is 13256455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13256455 = 5 ⋅2651291.

It is a cyclic number.

It is not a de Polignac number, because 55465231 - 2²¹ = 53368079 is a prime.

It is a super-2 number, since 2×55465231² = 6152783699766722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1789201 = 55465231 / (5 + 5 + 4 + 6 + 5 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55465193 and 55465202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55465211) 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, 894570 + ... + 894631.

It is an arithmetic number, because the mean of its divisors is an integer number (14313616).

Almost surely, 2^55465231 is an apocalyptic number.

55465231 is a deficient number, since it is larger than the sum of its proper divisors (1789233).

55465231 is a wasteful number, since it uses less digits than its factorization.

55465231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789232.

The product of its digits is 18000, while the sum is 31.

The square root of 55465231 is about 7447.4983048001. The cubic root of 55465231 is about 381.3645104026.

It can be divided in two parts, 55465 and 231, that added together give a square (55696 = 236²).

The spelling of 55465231 in words is "fifty-five million, four hundred sixty-five thousand, two hundred thirty-one".