45397187 has 16 divisors (see below), whose sum is σ = 51611904. Its totient is φ = 39564000.

The previous prime is 45397181. The next prime is 45397217. The reversal of 45397187 is 78179354.

45397187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 45397187 - 2⁸ = 45396931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45397181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28112 + ... + 29682.

It is an arithmetic number, because the mean of its divisors is an integer number (3225744).

Almost surely, 2^45397187 is an apocalyptic number.

45397187 is a deficient number, since it is larger than the sum of its proper divisors (6214717).

45397187 is a wasteful number, since it uses less digits than its factorization.

45397187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its digits is 211680, while the sum is 44.

The square root of 45397187 is about 6737.7434649889. The cubic root of 45397187 is about 356.7327493747.

The spelling of 45397187 in words is "forty-five million, three hundred ninety-seven thousand, one hundred eighty-seven".