55351250 has 20 divisors (see below), whose sum is σ = 103752726. Its totient is φ = 22140000.

The previous prime is 55351229. The next prime is 55351259. The reversal of 55351250 is 5215355.

It can be written as a sum of positive squares in 5 ways, for example, as 101761 + 55249489 = 319^2 + 7433^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55351259) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20891 + ... + 23390.

Almost surely, 2^55351250 is an apocalyptic number.

55351250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55351250 is a deficient number, since it is larger than the sum of its proper divisors (48401476).

55351250 is an equidigital number, since it uses as much as digits as its factorization.

55351250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44303 (or 44288 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 55351250 is about 7439.8420682162. The cubic root of 55351250 is about 381.1030966767.

The spelling of 55351250 in words is "fifty-five million, three hundred fifty-one thousand, two hundred fifty".