45121970 has 16 divisors (see below), whose sum is σ = 84020760. Its totient is φ = 17426304.

The previous prime is 45121969. The next prime is 45121997. The reversal of 45121970 is 7912154.

It can be written as a sum of positive squares in 4 ways, for example, as 29495761 + 15626209 = 5431^2 + 3953^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77507 + ... + 78086.

Almost surely, 2^45121970 is an apocalyptic number.

45121970 is a deficient number, since it is larger than the sum of its proper divisors (38898790).

45121970 is a wasteful number, since it uses less digits than its factorization.

45121970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155629.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 45121970 is about 6717.2888876391. The cubic root of 45121970 is about 356.0103992670.

The spelling of 45121970 in words is "forty-five million, one hundred twenty-one thousand, nine hundred seventy".