55664130 has 32 divisors (see below), whose sum is σ = 134923968. Its totient is φ = 14696000.

The previous prime is 55664107. The next prime is 55664131. The reversal of 55664130 is 3146655.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55664131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6156 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (4216374).

Almost surely, 2^55664130 is an apocalyptic number.

55664130 is an abundant number, since it is smaller than the sum of its proper divisors (79259838).

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

55664130 is a wasteful number, since it uses less digits than its factorization.

55664130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18482.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55664130 is about 7460.8397650667. The cubic root of 55664130 is about 381.8198258536.

The spelling of 55664130 in words is "fifty-five million, six hundred sixty-four thousand, one hundred thirty".