55715645 has 8 divisors (see below), whose sum is σ = 66899040. Its totient is φ = 44545680.

The previous prime is 55715629. The next prime is 55715701. The reversal of 55715645 is 54651755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55715645 - 2⁴ = 55715629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55715599 and 55715608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13250 + ... + 16940.

It is an arithmetic number, because the mean of its divisors is an integer number (8362380).

Almost surely, 2^55715645 is an apocalyptic number.

It is an amenable number.

55715645 is a deficient number, since it is larger than the sum of its proper divisors (11183395).

55715645 is a wasteful number, since it uses less digits than its factorization.

55715645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715.

The product of its digits is 105000, while the sum is 38.

The square root of 55715645 is about 7464.2913260403. The cubic root of 55715645 is about 381.9375760317.

The spelling of 55715645 in words is "fifty-five million, seven hundred fifteen thousand, six hundred forty-five".