45557251 has 4 divisors (see below), whose sum is σ = 45655272. Its totient is φ = 45459232.

The previous prime is 45557243. The next prime is 45557279. The reversal of 45557251 is 15275554.

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 45557251 - 2³ = 45557243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45557201) 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, 48310 + ... + 49243.

It is an arithmetic number, because the mean of its divisors is an integer number (11413818).

Almost surely, 2^45557251 is an apocalyptic number.

45557251 is a deficient number, since it is larger than the sum of its proper divisors (98021).

45557251 is an equidigital number, since it uses as much as digits as its factorization.

45557251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98020.

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

The square root of 45557251 is about 6749.6111739862. The cubic root of 45557251 is about 357.1515204984.

The spelling of 45557251 in words is "forty-five million, five hundred fifty-seven thousand, two hundred fifty-one".