55720322 has 32 divisors (see below), whose sum is σ = 102166272. Its totient is φ = 22247424.

The previous prime is 55720309. The next prime is 55720337. The reversal of 55720322 is 22302755.

It is a junction number, because it is equal to n+sod(n) for n = 55720291 and 55720300.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23378 + ... + 25650.

It is an arithmetic number, because the mean of its divisors is an integer number (3192696).

Almost surely, 2^55720322 is an apocalyptic number.

55720322 is a deficient number, since it is larger than the sum of its proper divisors (46445950).

55720322 is a wasteful number, since it uses less digits than its factorization.

55720322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 55720322 is about 7464.6046110963. The cubic root of 55720322 is about 381.9482628688.

The spelling of 55720322 in words is "fifty-five million, seven hundred twenty thousand, three hundred twenty-two".