55724038 has 4 divisors (see below), whose sum is σ = 83586060. Its totient is φ = 27862018.

The previous prime is 55724033. The next prime is 55724077. The reversal of 55724038 is 83042755.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×55724038² = 6210336822050888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55723994 and 55724012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55724033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13931008 + ... + 13931011.

It is an arithmetic number, because the mean of its divisors is an integer number (20896515).

Almost surely, 2^55724038 is an apocalyptic number.

55724038 is a deficient number, since it is larger than the sum of its proper divisors (27862022).

55724038 is a wasteful number, since it uses less digits than its factorization.

55724038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27862021.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 55724038 is about 7464.8535149727. The cubic root of 55724038 is about 381.9567534167.

The spelling of 55724038 in words is "fifty-five million, seven hundred twenty-four thousand, thirty-eight".