55257451 has 4 divisors (see below), whose sum is σ = 56542552. Its totient is φ = 53972352.

The previous prime is 55257437. The next prime is 55257457. The reversal of 55257451 is 15475255.

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 55257451 - 2⁹ = 55256939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55257457) 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, 642486 + ... + 642571.

It is an arithmetic number, because the mean of its divisors is an integer number (14135638).

Almost surely, 2^55257451 is an apocalyptic number.

55257451 is a deficient number, since it is larger than the sum of its proper divisors (1285101).

55257451 is a wasteful number, since it uses less digits than its factorization.

55257451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285100.

The product of its digits is 35000, while the sum is 34.

The square root of 55257451 is about 7433.5355652610. The cubic root of 55257451 is about 380.8877007527.

The spelling of 55257451 in words is "fifty-five million, two hundred fifty-seven thousand, four hundred fifty-one".