53291690 has 32 divisors (see below), whose sum is σ = 100590336. Its totient is φ = 20289280.

The previous prime is 53291683. The next prime is 53291723. The reversal of 53291690 is 9619235.

53291690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53291690² = 5680008446112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53291690.

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 15 ways as a sum of consecutive naturals, for example, 60050 + ... + 60930.

It is an arithmetic number, because the mean of its divisors is an integer number (3143448).

Almost surely, 2^53291690 is an apocalyptic number.

53291690 is a deficient number, since it is larger than the sum of its proper divisors (47298646).

53291690 is a wasteful number, since it uses less digits than its factorization.

53291690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 53291690 is about 7300.1157525069. The cubic root of 53291690 is about 376.3164163501.

The spelling of 53291690 in words is "fifty-three million, two hundred ninety-one thousand, six hundred ninety".