55709480 has 32 divisors (see below), whose sum is σ = 129392640. Its totient is φ = 21564480.

The previous prime is 55709477. The next prime is 55709483. The reversal of 55709480 is 8490755.

It is an interprime number because it is at equal distance from previous prime (55709477) and next prime (55709483).

It is not an unprimeable number, because it can be changed into a prime (55709483) 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 7 ways as a sum of consecutive naturals, for example, 21224 + ... + 23703.

It is an arithmetic number, because the mean of its divisors is an integer number (4043520).

Almost surely, 2^55709480 is an apocalyptic number.

It is an amenable number.

55709480 is an abundant number, since it is smaller than the sum of its proper divisors (73683160).

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

55709480 is a wasteful number, since it uses less digits than its factorization.

55709480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44969 (or 44965 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 55709480 is about 7463.8783484191. The cubic root of 55709480 is about 381.9234882352.

The spelling of 55709480 in words is "fifty-five million, seven hundred nine thousand, four hundred eighty".