55722532 has 12 divisors (see below), whose sum is σ = 103250700. Its totient is φ = 26222336.

The previous prime is 55722529. The next prime is 55722533. The reversal of 55722532 is 23522755.

It can be written as a sum of positive squares in 2 ways, for example, as 42719296 + 13003236 = 6536^2 + 3606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55722494 and 55722503.

It is not an unprimeable number, because it can be changed into a prime (55722533) 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, 409657 + ... + 409792.

It is an arithmetic number, because the mean of its divisors is an integer number (8604225).

Almost surely, 2^55722532 is an apocalyptic number.

It is an amenable number.

55722532 is a deficient number, since it is larger than the sum of its proper divisors (47528168).

55722532 is a wasteful number, since it uses less digits than its factorization.

55722532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819470 (or 819468 counting only the distinct ones).

The product of its digits is 21000, while the sum is 31.

The square root of 55722532 is about 7464.7526415816. The cubic root of 55722532 is about 381.9533124598.

The spelling of 55722532 in words is "fifty-five million, seven hundred twenty-two thousand, five hundred thirty-two".