45253987 has 2 divisors, whose sum is σ = 45253988. Its totient is φ = 45253986.

The previous prime is 45253981. The next prime is 45254021. The reversal of 45253987 is 78935254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45253987 - 2³ = 45253979 is a prime.

It is not a weakly prime, because it can be changed into another prime (45253981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22626993 + 22626994.

It is an arithmetic number, because the mean of its divisors is an integer number (22626994).

Almost surely, 2^45253987 is an apocalyptic number.

45253987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45253987 is an equidigital number, since it uses as much as digits as its factorization.

45253987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 45253987 is about 6727.1083683853. The cubic root of 45253987 is about 356.3572640172.

The spelling of 45253987 in words is "forty-five million, two hundred fifty-three thousand, nine hundred eighty-seven".