55152250 has 64 divisors (see below), whose sum is σ = 115240320. Its totient is φ = 19641600.

The previous prime is 55152247. The next prime is 55152271. The reversal of 55152250 is 5225155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80409 + ... + 81091.

It is an arithmetic number, because the mean of its divisors is an integer number (1800630).

Almost surely, 2^55152250 is an apocalyptic number.

55152250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55152250 is an abundant number, since it is smaller than the sum of its proper divisors (60088070).

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

55152250 is a wasteful number, since it uses less digits than its factorization.

55152250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55152250 is about 7426.4560861827. The cubic root of 55152250 is about 380.6458315753.

The spelling of 55152250 in words is "fifty-five million, one hundred fifty-two thousand, two hundred fifty".