55580737 has 4 divisors (see below), whose sum is σ = 57373696. Its totient is φ = 53787780.

The previous prime is 55580731. The next prime is 55580741. The reversal of 55580737 is 73708555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55580737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55580737.

It is not an unprimeable number, because it can be changed into a prime (55580731) 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, 896433 + ... + 896494.

It is an arithmetic number, because the mean of its divisors is an integer number (14343424).

Almost surely, 2^55580737 is an apocalyptic number.

It is an amenable number.

55580737 is a deficient number, since it is larger than the sum of its proper divisors (1792959).

55580737 is a wasteful number, since it uses less digits than its factorization.

55580737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792958.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 55580737 is about 7455.2489562724. The cubic root of 55580737 is about 381.6290565924.

The spelling of 55580737 in words is "fifty-five million, five hundred eighty thousand, seven hundred thirty-seven".