55577015 has 8 divisors (see below), whose sum is σ = 71822688. Its totient is φ = 41041440.

The previous prime is 55576999. The next prime is 55577047. The reversal of 55577015 is 51077555.

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

It is not a de Polignac number, because 55577015 - 2⁴ = 55576999 is a prime.

It is a Duffinian number.

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, 427451 + ... + 427580.

It is an arithmetic number, because the mean of its divisors is an integer number (8977836).

Almost surely, 2^55577015 is an apocalyptic number.

55577015 is a deficient number, since it is larger than the sum of its proper divisors (16245673).

55577015 is a wasteful number, since it uses less digits than its factorization.

55577015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855049.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 55577015 is about 7454.9993293092. Note that the first 3 decimals coincide. The cubic root of 55577015 is about 381.6205377234.

The spelling of 55577015 in words is "fifty-five million, five hundred seventy-seven thousand, fifteen".