45131587 has 2 divisors, whose sum is σ = 45131588. Its totient is φ = 45131586.

The previous prime is 45131579. The next prime is 45131591. The reversal of 45131587 is 78513154.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45131587 - 2³ = 45131579 is a prime.

It is not a weakly prime, because it can be changed into another prime (45131507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22565793 + 22565794.

It is an arithmetic number, because the mean of its divisors is an integer number (22565794).

Almost surely, 2^45131587 is an apocalyptic number.

45131587 is a deficient number, since it is larger than the sum of its proper divisors (1).

45131587 is an equidigital number, since it uses as much as digits as its factorization.

45131587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 45131587 is about 6718.0046888939. The cubic root of 45131587 is about 356.0356900422.

The spelling of 45131587 in words is "forty-five million, one hundred thirty-one thousand, five hundred eighty-seven".