53156805 has 32 divisors (see below), whose sum is σ = 92534400. Its totient is φ = 25900800.

The previous prime is 53156801. The next prime is 53156819. The reversal of 53156805 is 50865135.

It is not a de Polignac number, because 53156805 - 2² = 53156801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53156801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18346 + ... + 21044.

It is an arithmetic number, because the mean of its divisors is an integer number (2891700).

Almost surely, 2^53156805 is an apocalyptic number.

It is an amenable number.

53156805 is a deficient number, since it is larger than the sum of its proper divisors (39377595).

53156805 is a wasteful number, since it uses less digits than its factorization.

53156805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 53156805 is about 7290.8713471025. The cubic root of 53156805 is about 375.9986537035.

The spelling of 53156805 in words is "fifty-three million, one hundred fifty-six thousand, eight hundred five".