55980505 has 32 divisors (see below), whose sum is σ = 80745984. Its totient is φ = 36427776.

The previous prime is 55980499. The next prime is 55980521. The reversal of 55980505 is 50508955.

It is not a de Polignac number, because 55980505 - 2³ = 55980497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158409 + ... + 158761.

It is an arithmetic number, because the mean of its divisors is an integer number (2523312).

Almost surely, 2^55980505 is an apocalyptic number.

It is an amenable number.

55980505 is a deficient number, since it is larger than the sum of its proper divisors (24765479).

55980505 is a wasteful number, since it uses less digits than its factorization.

55980505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 45000, while the sum is 37.

The square root of 55980505 is about 7482.0120956866. The cubic root of 55980505 is about 382.5418354572.

The spelling of 55980505 in words is "fifty-five million, nine hundred eighty thousand, five hundred five".