45255421 has 6 divisors (see below), whose sum is σ = 47309150. Its totient is φ = 43287288.

The previous prime is 45255409. The next prime is 45255433. The reversal of 45255421 is 12455254.

It is an interprime number because it is at equal distance from previous prime (45255409) and next prime (45255433).

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 20115225 = 5014^2 + 4485^2 .

It is not a de Polignac number, because 45255421 - 2⁵ = 45255389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45255421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45255451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42246 + ... + 43303.

Almost surely, 2^45255421 is an apocalyptic number.

It is an amenable number.

45255421 is a deficient number, since it is larger than the sum of its proper divisors (2053729).

45255421 is an equidigital number, since it uses as much as digits as its factorization.

45255421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85595 (or 85572 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 45255421 is about 6727.2149512261. The cubic root of 45255421 is about 356.3610280386.

The spelling of 45255421 in words is "forty-five million, two hundred fifty-five thousand, four hundred twenty-one".