45021512 has 8 divisors (see below), whose sum is σ = 84415350. Its totient is φ = 22510752.

The previous prime is 45021497. The next prime is 45021523. The reversal of 45021512 is 21512054.

It can be written as a sum of positive squares in only one way, i.e., 44970436 + 51076 = 6706^2 + 226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×45021512² = 4053873085532288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813837 + ... + 2813852.

Almost surely, 2^45021512 is an apocalyptic number.

It is an amenable number.

45021512 is a deficient number, since it is larger than the sum of its proper divisors (39393838).

45021512 is a wasteful number, since it uses less digits than its factorization.

45021512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627695 (or 5627691 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 45021512 is about 6709.8071507309. The cubic root of 45021512 is about 355.7459998559.

Adding to 45021512 its reverse (21512054), we get a palindrome (66533566).

The spelling of 45021512 in words is "forty-five million, twenty-one thousand, five hundred twelve".