55331451 has 16 divisors (see below), whose sum is σ = 93683200. Its totient is φ = 31617864.

The previous prime is 55331443. The next prime is 55331459. The reversal of 55331451 is 15413355.

It is an interprime number because it is at equal distance from previous prime (55331443) and next prime (55331459).

It is not a de Polignac number, because 55331451 - 2³ = 55331443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55331459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146191 + ... + 146568.

It is an arithmetic number, because the mean of its divisors is an integer number (5855200).

Almost surely, 2^55331451 is an apocalyptic number.

55331451 is a deficient number, since it is larger than the sum of its proper divisors (38351749).

55331451 is a wasteful number, since it uses less digits than its factorization.

55331451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292775 (or 292769 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 55331451 is about 7438.5113430041. The cubic root of 55331451 is about 381.0576513913.

The spelling of 55331451 in words is "fifty-five million, three hundred thirty-one thousand, four hundred fifty-one".