55615722 has 8 divisors (see below), whose sum is σ = 111231456. Its totient is φ = 18538572.

The previous prime is 55615697. The next prime is 55615723. The reversal of 55615722 is 22751655.

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

55615722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (55615723) 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 3 ways as a sum of consecutive naturals, for example, 4634638 + ... + 4634649.

It is an arithmetic number, because the mean of its divisors is an integer number (13903932).

Almost surely, 2^55615722 is an apocalyptic number.

55615722 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.

55615722 is a wasteful number, since it uses less digits than its factorization.

55615722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9269292.

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

The square root of 55615722 is about 7457.5949206162. The cubic root of 55615722 is about 381.7091112597.

The spelling of 55615722 in words is "fifty-five million, six hundred fifteen thousand, seven hundred twenty-two".