55643015 has 8 divisors (see below), whose sum is σ = 66925008. Its totient is φ = 44412160.

The previous prime is 55642997. The next prime is 55643017. The reversal of 55643015 is 51034655.

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

It is not a de Polignac number, because 55643015 - 2⁸ = 55642759 is a prime.

It is a super-2 number, since 2×55643015² = 6192290236580450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55643017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10346 + ... + 14775.

It is an arithmetic number, because the mean of its divisors is an integer number (8365626).

Almost surely, 2^55643015 is an apocalyptic number.

55643015 is a deficient number, since it is larger than the sum of its proper divisors (11281993).

55643015 is a wasteful number, since it uses less digits than its factorization.

55643015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25569.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55643015 is about 7459.4245756627. The cubic root of 55643015 is about 381.7715413465.

The spelling of 55643015 in words is "fifty-five million, six hundred forty-three thousand, fifteen".