55252250 has 32 divisors (see below), whose sum is σ = 107012880. Its totient is φ = 21336000.

The previous prime is 55252207. The next prime is 55252319. The reversal of 55252250 is 5225255.

It can be written as a sum of positive squares in 8 ways, for example, as 8862529 + 46389721 = 2977^2 + 6811^2 .

It is a super-2 number, since 2×55252250² = 6105622260125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3440 + ... + 11060.

Almost surely, 2^55252250 is an apocalyptic number.

55252250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55252250 is a deficient number, since it is larger than the sum of its proper divisors (51760630).

55252250 is a wasteful number, since it uses less digits than its factorization.

55252250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667 (or 7657 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 55252250 is about 7433.1857234970. The cubic root of 55252250 is about 380.8757502734.

The spelling of 55252250 in words is "fifty-five million, two hundred fifty-two thousand, two hundred fifty".