55732401 has 16 divisors (see below), whose sum is σ = 82779520. Its totient is φ = 37059120.

The previous prime is 55732399. The next prime is 55732421. The reversal of 55732401 is 10423755.

It is a happy number.

It is not a de Polignac number, because 55732401 - 2¹ = 55732399 is a prime.

It is a super-2 number, since 2×55732401² = 6212201042449602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55732421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8916 + ... + 13818.

It is an arithmetic number, because the mean of its divisors is an integer number (5173720).

Almost surely, 2^55732401 is an apocalyptic number.

It is an amenable number.

55732401 is a deficient number, since it is larger than the sum of its proper divisors (27047119).

55732401 is a wasteful number, since it uses less digits than its factorization.

55732401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333 (or 5327 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55732401 is about 7465.4136523035. The cubic root of 55732401 is about 381.9758603387.

The spelling of 55732401 in words is "fifty-five million, seven hundred thirty-two thousand, four hundred one".