55500715 has 4 divisors (see below), whose sum is σ = 66600864. Its totient is φ = 44400568.

The previous prime is 55500713. The next prime is 55500719. The reversal of 55500715 is 51700555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51700555 = 5 ⋅10340111.

It is a cyclic number.

It is not a de Polignac number, because 55500715 - 2¹ = 55500713 is a prime.

It is a super-2 number, since 2×55500715² = 6160658731022450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55500713) 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, 5550067 + ... + 5550076.

It is an arithmetic number, because the mean of its divisors is an integer number (16650216).

Almost surely, 2^55500715 is an apocalyptic number.

55500715 is a deficient number, since it is larger than the sum of its proper divisors (11100149).

55500715 is a wasteful number, since it uses less digits than its factorization.

55500715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100148.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 55500715 is about 7449.8802003791. The cubic root of 55500715 is about 381.4458193192.

The spelling of 55500715 in words is "fifty-five million, five hundred thousand, seven hundred fifteen".