55917522 has 48 divisors (see below), whose sum is σ = 131439672. Its totient is φ = 17111040.

The previous prime is 55917517. The next prime is 55917523. The reversal of 55917522 is 22571955.

It can be written as a sum of positive squares in 4 ways, for example, as 46498761 + 9418761 = 6819^2 + 3069^2 .

It is not an unprimeable number, because it can be changed into a prime (55917523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10318 + ... + 14774.

Almost surely, 2^55917522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55917522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65719836).

55917522 is an abundant number, since it is smaller than the sum of its proper divisors (75522150).

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

55917522 is a wasteful number, since it uses less digits than its factorization.

55917522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523 (or 4520 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 55917522 is about 7477.8019497711. The cubic root of 55917522 is about 382.3983171979.

It can be divided in two parts, 559 and 17522, that added together give a palindrome (18081).

The spelling of 55917522 in words is "fifty-five million, nine hundred seventeen thousand, five hundred twenty-two".