55615004 has 6 divisors (see below), whose sum is σ = 97326264. Its totient is φ = 27807500.

The previous prime is 55614997. The next prime is 55615009. The reversal of 55615004 is 40051655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55615009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6951872 + ... + 6951879.

It is an arithmetic number, because the mean of its divisors is an integer number (16221044).

Almost surely, 2^55615004 is an apocalyptic number.

It is an amenable number.

55615004 is a deficient number, since it is larger than the sum of its proper divisors (41711260).

55615004 is a wasteful number, since it uses less digits than its factorization.

55615004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903755 (or 13903753 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 55615004 is about 7457.5467816166. The cubic root of 55615004 is about 381.7074686287.

Adding to 55615004 its reverse (40051655), we get a palindrome (95666659).

The spelling of 55615004 in words is "fifty-five million, six hundred fifteen thousand, four".