45251387 has 2 divisors, whose sum is σ = 45251388. Its totient is φ = 45251386.

The previous prime is 45251377. The next prime is 45251411. The reversal of 45251387 is 78315254.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45251387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45251317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22625693 + 22625694.

It is an arithmetic number, because the mean of its divisors is an integer number (22625694).

Almost surely, 2^45251387 is an apocalyptic number.

45251387 is a deficient number, since it is larger than the sum of its proper divisors (1).

45251387 is an equidigital number, since it uses as much as digits as its factorization.

45251387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 45251387 is about 6726.9151176449. The cubic root of 45251387 is about 356.3504392290.

The spelling of 45251387 in words is "forty-five million, two hundred fifty-one thousand, three hundred eighty-seven".