55513004 has 12 divisors (see below), whose sum is σ = 97657728. Its totient is φ = 27610800.

The previous prime is 55513001. The next prime is 55513009. The reversal of 55513004 is 40031555.

It is a super-2 number, since 2×55513004² = 6163387226208032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55513001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35567 + ... + 37094.

It is an arithmetic number, because the mean of its divisors is an integer number (8138144).

Almost surely, 2^55513004 is an apocalyptic number.

It is an amenable number.

55513004 is a deficient number, since it is larger than the sum of its proper divisors (42144724).

55513004 is a wasteful number, since it uses less digits than its factorization.

55513004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72856 (or 72854 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55513004 is about 7450.7049330919. The cubic root of 55513004 is about 381.4739705586.

Adding to 55513004 its reverse (40031555), we get a palindrome (95544559).

The spelling of 55513004 in words is "fifty-five million, five hundred thirteen thousand, four".