55731451 has 4 divisors (see below), whose sum is σ = 55977192. Its totient is φ = 55485712.

The previous prime is 55731449. The next prime is 55731523. The reversal of 55731451 is 15413755.

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 55731451 - 2¹ = 55731449 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55731251) 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, 122530 + ... + 122983.

It is an arithmetic number, because the mean of its divisors is an integer number (13994298).

Almost surely, 2^55731451 is an apocalyptic number.

55731451 is a deficient number, since it is larger than the sum of its proper divisors (245741).

55731451 is a wasteful number, since it uses less digits than its factorization.

55731451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245740.

The product of its digits is 10500, while the sum is 31.

The square root of 55731451 is about 7465.3500252835. The cubic root of 55731451 is about 381.9736899727.

The spelling of 55731451 in words is "fifty-five million, seven hundred thirty-one thousand, four hundred fifty-one".