55040250 has 32 divisors (see below), whose sum is σ = 137382336. Its totient is φ = 14677200.

The previous prime is 55040233. The next prime is 55040261. The reversal of 55040250 is 5204055.

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, 35944 + ... + 37443.

It is an arithmetic number, because the mean of its divisors is an integer number (4293198).

Almost surely, 2^55040250 is an apocalyptic number.

55040250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55040250 is an abundant number, since it is smaller than the sum of its proper divisors (82342086).

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

55040250 is a wasteful number, since it uses less digits than its factorization.

55040250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73407 (or 73397 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 55040250 is about 7418.9116452482. The cubic root of 55040250 is about 380.3879924472.

The spelling of 55040250 in words is "fifty-five million, forty thousand, two hundred fifty".