55628451 has 20 divisors (see below), whose sum is σ = 83490000. Its totient is φ = 36911376.

The previous prime is 55628449. The next prime is 55628453. The reversal of 55628451 is 15482655.

It is an interprime number because it is at equal distance from previous prime (55628449) and next prime (55628453).

It is not a de Polignac number, because 55628451 - 2¹ = 55628449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55628453) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17050 + ... + 20048.

It is an arithmetic number, because the mean of its divisors is an integer number (4174500).

Almost surely, 2^55628451 is an apocalyptic number.

55628451 is a deficient number, since it is larger than the sum of its proper divisors (27861549).

55628451 is a wasteful number, since it uses less digits than its factorization.

55628451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3231 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55628451 is about 7458.4482970655. The cubic root of 55628451 is about 381.7382301519.

The spelling of 55628451 in words is "fifty-five million, six hundred twenty-eight thousand, four hundred fifty-one".