53812690 has 32 divisors (see below), whose sum is σ = 101288880. Its totient is φ = 20557824.

The previous prime is 53812687. The next prime is 53812711. The reversal of 53812690 is 9621835.

It can be written as a sum of positive squares in 8 ways, for example, as 33535681 + 20277009 = 5791^2 + 4503^2 .

It is a super-2 number, since 2×53812690² = 5791611210072200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27174 + ... + 29086.

Almost surely, 2^53812690 is an apocalyptic number.

53812690 is a deficient number, since it is larger than the sum of its proper divisors (47476190).

53812690 is a wasteful number, since it uses less digits than its factorization.

53812690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 53812690 is about 7335.7133259145. The cubic root of 53812690 is about 377.5387794029.

It can be divided in two parts, 5381 and 2690, that multiplied together give a triangular number (14474890 = T₅₃₈₀).

The spelling of 53812690 in words is "fifty-three million, eight hundred twelve thousand, six hundred ninety".