55993715 has 4 divisors (see below), whose sum is σ = 67192464. Its totient is φ = 44794968.

The previous prime is 55993711. The next prime is 55993757. The reversal of 55993715 is 51739955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51739955 = 5 ⋅10347991.

It is a cyclic number.

It is not a de Polignac number, because 55993715 - 2² = 55993711 is a prime.

It is a super-2 number, since 2×55993715² = 6270592239002450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55993711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5599367 + ... + 5599376.

It is an arithmetic number, because the mean of its divisors is an integer number (16798116).

Almost surely, 2^55993715 is an apocalyptic number.

55993715 is a deficient number, since it is larger than the sum of its proper divisors (11198749).

55993715 is a wasteful number, since it uses less digits than its factorization.

55993715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11198748.

The product of its digits is 212625, while the sum is 44.

The square root of 55993715 is about 7482.8948275383. The cubic root of 55993715 is about 382.5719231946.

The spelling of 55993715 in words is "fifty-five million, nine hundred ninety-three thousand, seven hundred fifteen".