45187953 has 4 divisors (see below), whose sum is σ = 60250608. Its totient is φ = 30125300.

The previous prime is 45187937. The next prime is 45187957. The reversal of 45187953 is 35978154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45187953 - 2⁴ = 45187937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45187957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7531323 + ... + 7531328.

It is an arithmetic number, because the mean of its divisors is an integer number (15062652).

Almost surely, 2^45187953 is an apocalyptic number.

It is an amenable number.

45187953 is a deficient number, since it is larger than the sum of its proper divisors (15062655).

45187953 is a wasteful number, since it uses less digits than its factorization.

45187953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15062654.

The product of its digits is 151200, while the sum is 42.

The square root of 45187953 is about 6722.1985242925. The cubic root of 45187953 is about 356.1838490901.

The spelling of 45187953 in words is "forty-five million, one hundred eighty-seven thousand, nine hundred fifty-three".