53030402 has 4 divisors (see below), whose sum is σ = 79545606. Its totient is φ = 26515200.

The previous prime is 53030359. The next prime is 53030413. The reversal of 53030402 is 20403035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 1635841 = 7169^2 + 1279^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257599 + ... + 13257602.

Almost surely, 2^53030402 is an apocalyptic number.

53030402 is a deficient number, since it is larger than the sum of its proper divisors (26515204).

53030402 is a wasteful number, since it uses less digits than its factorization.

53030402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26515203.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 53030402 is about 7282.1976078654. The cubic root of 53030402 is about 375.7003847119.

Adding to 53030402 its reverse (20403035), we get a palindrome (73433437).

The spelling of 53030402 in words is "fifty-three million, thirty thousand, four hundred two".