45405251 has 2 divisors, whose sum is σ = 45405252. Its totient is φ = 45405250.

The previous prime is 45405223. The next prime is 45405263. The reversal of 45405251 is 15250454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45405251 - 2⁶ = 45405187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45405251.

It is not a weakly prime, because it can be changed into another prime (45405551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22702625 + 22702626.

It is an arithmetic number, because the mean of its divisors is an integer number (22702626).

Almost surely, 2^45405251 is an apocalyptic number.

45405251 is a deficient number, since it is larger than the sum of its proper divisors (1).

45405251 is an equidigital number, since it uses as much as digits as its factorization.

45405251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 45405251 is about 6738.3418583506. The cubic root of 45405251 is about 356.7538705261.

The spelling of 45405251 in words is "forty-five million, four hundred five thousand, two hundred fifty-one".