53207690 has 16 divisors (see below), whose sum is σ = 96051528. Its totient is φ = 21221376.

The previous prime is 53207689. The next prime is 53207711. The reversal of 53207690 is 9670235.

53207690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40081561 + 13126129 = 6331^2 + 3623^2 .

It is a super-2 number, since 2×53207690² = 5662116550272200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4007 + ... + 11066.

Almost surely, 2^53207690 is an apocalyptic number.

53207690 is a deficient number, since it is larger than the sum of its proper divisors (42843838).

53207690 is a wasteful number, since it uses less digits than its factorization.

53207690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15433.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 53207690 is about 7294.3601501434. The cubic root of 53207690 is about 376.1185918735.

The spelling of 53207690 in words is "fifty-three million, two hundred seven thousand, six hundred ninety".