55615044 has 24 divisors (see below), whose sum is σ = 131056128. Its totient is φ = 18354400.

The previous prime is 55615037. The next prime is 55615051. The reversal of 55615044 is 44051655.

It is an interprime number because it is at equal distance from previous prime (55615037) and next prime (55615051).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21732 + ... + 24155.

It is an arithmetic number, because the mean of its divisors is an integer number (5460672).

Almost surely, 2^55615044 is an apocalyptic number.

It is an amenable number.

55615044 is an abundant number, since it is smaller than the sum of its proper divisors (75441084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55615044 is a wasteful number, since it uses less digits than its factorization.

55615044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45995 (or 45993 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55615044 is about 7457.5494634632. The cubic root of 55615044 is about 381.7075601406.

Adding to 55615044 its reverse (44051655), we get a palindrome (99666699).

The spelling of 55615044 in words is "fifty-five million, six hundred fifteen thousand, forty-four".