55187450 has 12 divisors (see below), whose sum is σ = 102648750. Its totient is φ = 22074960.

The previous prime is 55187441. The next prime is 55187459. The reversal of 55187450 is 5478155.

It is an interprime number because it is at equal distance from previous prime (55187441) and next prime (55187459).

It can be written as a sum of positive squares in 3 ways, for example, as 49042009 + 6145441 = 7003^2 + 2479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55187450.

It is not an unprimeable number, because it can be changed into a prime (55187459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 551825 + ... + 551924.

Almost surely, 2^55187450 is an apocalyptic number.

55187450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55187450 is a deficient number, since it is larger than the sum of its proper divisors (47461300).

55187450 is a wasteful number, since it uses less digits than its factorization.

55187450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103761 (or 1103756 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55187450 is about 7428.8256137831. The cubic root of 55187450 is about 380.7267946293.

The spelling of 55187450 in words is "fifty-five million, one hundred eighty-seven thousand, four hundred fifty".