55511451 has 12 divisors (see below), whose sum is σ = 81011112. Its totient is φ = 36625536.

The previous prime is 55511437. The next prime is 55511459. The reversal of 55511451 is 15411555.

It is a de Polignac number, because none of the positive numbers 2^k-55511451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55511459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30921 + ... + 32666.

It is an arithmetic number, because the mean of its divisors is an integer number (6750926).

Almost surely, 2^55511451 is an apocalyptic number.

55511451 is a deficient number, since it is larger than the sum of its proper divisors (25499661).

55511451 is a wasteful number, since it uses less digits than its factorization.

55511451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63690 (or 63687 counting only the distinct ones).

The product of its digits is 2500, while the sum is 27.

The square root of 55511451 is about 7450.6007140364. The cubic root of 55511451 is about 381.4704132263.

The spelling of 55511451 in words is "fifty-five million, five hundred eleven thousand, four hundred fifty-one".