53720955 has 32 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 28375776.

The previous prime is 53720921. The next prime is 53720957. The reversal of 53720955 is 55902735.

It is not a de Polignac number, because 53720955 - 2⁷ = 53720827 is a prime.

It is a super-2 number, since 2×53720955² = 5771882012224050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (53720957) 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, 12586 + ... + 16304.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^53720955 is an apocalyptic number.

53720955 is a deficient number, since it is larger than the sum of its proper divisors (42701445).

53720955 is a wasteful number, since it uses less digits than its factorization.

53720955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840 (or 3834 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 36.

The square root of 53720955 is about 7329.4580290769. The cubic root of 53720955 is about 377.3241260772.

The spelling of 53720955 in words is "fifty-three million, seven hundred twenty thousand, nine hundred fifty-five".