53012402 has 16 divisors (see below), whose sum is σ = 81307800. Its totient is φ = 25913472.

The previous prime is 53012383. The next prime is 53012417. The reversal of 53012402 is 20421035.

53012402 = 974² + 975² + ... + 1026².

It can be written as a sum of positive squares in 4 ways, for example, as 52983841 + 28561 = 7279^2 + 169^2 .

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, 36278 + ... + 37710.

Almost surely, 2^53012402 is an apocalyptic number.

53012402 is a deficient number, since it is larger than the sum of its proper divisors (28295398).

53012402 is a wasteful number, since it uses less digits than its factorization.

53012402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 53012402 is about 7280.9616123147. The cubic root of 53012402 is about 375.6578721660.

Adding to 53012402 its reverse (20421035), we get a palindrome (73433437).

The spelling of 53012402 in words is "fifty-three million, twelve thousand, four hundred two".