55723250 has 64 divisors (see below), whose sum is σ = 118879488. Its totient is φ = 19360000.

The previous prime is 55723249. The next prime is 55723267. The reversal of 55723250 is 5232755.

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, 62810 + ... + 63690.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492).

Almost surely, 2^55723250 is an apocalyptic number.

55723250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55723250 is an abundant number, since it is smaller than the sum of its proper divisors (63156238).

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

55723250 is a wasteful number, since it uses less digits than its factorization.

55723250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 55723250 is about 7464.8007341121. The cubic root of 55723250 is about 381.9549529769.

The spelling of 55723250 in words is "fifty-five million, seven hundred twenty-three thousand, two hundred fifty".