55772252 has 24 divisors (see below), whose sum is σ = 99066240. Its totient is φ = 27470960.

The previous prime is 55772251. The next prime is 55772267. The reversal of 55772252 is 25227755.

It is a super-2 number, since 2×55772252² = 6221088186303008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55772251) 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 7 ways as a sum of consecutive naturals, for example, 132899 + ... + 133317.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^55772252 is an apocalyptic number.

It is an amenable number.

55772252 is a deficient number, since it is larger than the sum of its proper divisors (43293988).

55772252 is a wasteful number, since it uses less digits than its factorization.

55772252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 839 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 55772252 is about 7468.0822170086. The cubic root of 55772252 is about 382.0668815582.

The spelling of 55772252 in words is "fifty-five million, seven hundred seventy-two thousand, two hundred fifty-two".