45623251 has 4 divisors (see below), whose sum is σ = 46265904. Its totient is φ = 44980600.

The previous prime is 45623243. The next prime is 45623267. The reversal of 45623251 is 15232654.

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 45623251 - 2³ = 45623243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45623051) 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, 321220 + ... + 321361.

It is an arithmetic number, because the mean of its divisors is an integer number (11566476).

Almost surely, 2^45623251 is an apocalyptic number.

45623251 is a deficient number, since it is larger than the sum of its proper divisors (642653).

45623251 is an equidigital number, since it uses as much as digits as its factorization.

45623251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642652.

The product of its digits is 7200, while the sum is 28.

The square root of 45623251 is about 6754.4985750239. The cubic root of 45623251 is about 357.3239089098.

The spelling of 45623251 in words is "forty-five million, six hundred twenty-three thousand, two hundred fifty-one".