53955720 has 384 divisors, whose sum is σ = 227485440. Its totient is φ = 11197440.

The previous prime is 53955691. The next prime is 53955743. The reversal of 53955720 is 2755935.

53955720 is a `hidden beast` number, since 539 + 55 + 72 + 0 = 666.

It is a super-2 number, since 2×53955720² = 5822439441436800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 884490 + ... + 884550.

It is an arithmetic number, because the mean of its divisors is an integer number (592410).

Almost surely, 2^53955720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53955720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113742720).

53955720 is an abundant number, since it is smaller than the sum of its proper divisors (173529720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53955720 is a wasteful number, since it uses less digits than its factorization.

53955720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 91 counting only the distinct ones).

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

The square root of 53955720 is about 7345.4557380737. The cubic root of 53955720 is about 377.8729731905.

The spelling of 53955720 in words is "fifty-three million, nine hundred fifty-five thousand, seven hundred twenty".