53156866 has 24 divisors (see below), whose sum is σ = 93505536. Its totient is φ = 22596840.

The previous prime is 53156863. The next prime is 53156867. The reversal of 53156866 is 66865135.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (53156861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10311 + ... + 14581.

It is an arithmetic number, because the mean of its divisors is an integer number (3896064).

Almost surely, 2^53156866 is an apocalyptic number.

53156866 is a deficient number, since it is larger than the sum of its proper divisors (40348670).

53156866 is a wasteful number, since it uses less digits than its factorization.

53156866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414 (or 4407 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 53156866 is about 7290.8755304147. The cubic root of 53156866 is about 375.9987975290.

The spelling of 53156866 in words is "fifty-three million, one hundred fifty-six thousand, eight hundred sixty-six".