55533004 has 12 divisors (see below), whose sum is σ = 99809584. Its totient is φ = 27015984.

The previous prime is 55532989. The next prime is 55533007. The reversal of 55533004 is 40033555.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55533004.

It is not an unprimeable number, because it can be changed into a prime (55533007) 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, 187464 + ... + 187759.

Almost surely, 2^55533004 is an apocalyptic number.

It is an amenable number.

55533004 is a deficient number, since it is larger than the sum of its proper divisors (44276580).

55533004 is a wasteful number, since it uses less digits than its factorization.

55533004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375264 (or 375262 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 55533004 is about 7452.0469671091. The cubic root of 55533004 is about 381.5197770232.

Adding to 55533004 its reverse (40033555), we get a palindrome (95566559).

The spelling of 55533004 in words is "fifty-five million, five hundred thirty-three thousand, four".