45431587 has 2 divisors, whose sum is σ = 45431588. Its totient is φ = 45431586.

The previous prime is 45431579. The next prime is 45431591. The reversal of 45431587 is 78513454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45431587 - 2³ = 45431579 is a prime.

It is not a weakly prime, because it can be changed into another prime (45432587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22715793 + 22715794.

It is an arithmetic number, because the mean of its divisors is an integer number (22715794).

Almost surely, 2^45431587 is an apocalyptic number.

45431587 is a deficient number, since it is larger than the sum of its proper divisors (1).

45431587 is an equidigital number, since it uses as much as digits as its factorization.

45431587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 45431587 is about 6740.2957650240. The cubic root of 45431587 is about 356.8228321094.

It can be divided in two parts, 454 and 31587, that added together give a square (32041 = 179²).

The spelling of 45431587 in words is "forty-five million, four hundred thirty-one thousand, five hundred eighty-seven".