55561722 has 8 divisors (see below), whose sum is σ = 111123456. Its totient is φ = 18520572.

The previous prime is 55561711. The next prime is 55561733. The reversal of 55561722 is 22716555.

It is an interprime number because it is at equal distance from previous prime (55561711) and next prime (55561733).

It is a sphenic number, since it is the product of 3 distinct primes.

55561722 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4630138 + ... + 4630149.

It is an arithmetic number, because the mean of its divisors is an integer number (13890432).

Almost surely, 2^55561722 is an apocalyptic number.

55561722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55561722 is a wasteful number, since it uses less digits than its factorization.

55561722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9260292.

The product of its digits is 21000, while the sum is 33.

The square root of 55561722 is about 7453.9735711901. The cubic root of 55561722 is about 381.5855312957.

The spelling of 55561722 in words is "fifty-five million, five hundred sixty-one thousand, seven hundred twenty-two".