45508987 has 2 divisors, whose sum is σ = 45508988. Its totient is φ = 45508986.

The previous prime is 45508951. The next prime is 45508999. The reversal of 45508987 is 78980554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45508987 - 2¹⁹ = 44984699 is a prime.

It is not a weakly prime, because it can be changed into another prime (45508087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22754493 + 22754494.

It is an arithmetic number, because the mean of its divisors is an integer number (22754494).

Almost surely, 2^45508987 is an apocalyptic number.

45508987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45508987 is an equidigital number, since it uses as much as digits as its factorization.

45508987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 45508987 is about 6746.0349094857. The cubic root of 45508987 is about 357.0253521320.

The spelling of 45508987 in words is "forty-five million, five hundred eight thousand, nine hundred eighty-seven".