55190745 has 12 divisors (see below), whose sum is σ = 95664036. Its totient is φ = 29435040.

The previous prime is 55190699. The next prime is 55190753. The reversal of 55190745 is 54709155.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 29909961 = 5028^2 + 5469^2 .

It is not a de Polignac number, because 55190745 - 2⁷ = 55190617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613186 + ... + 613275.

It is an arithmetic number, because the mean of its divisors is an integer number (7972003).

Almost surely, 2^55190745 is an apocalyptic number.

It is an amenable number.

55190745 is a deficient number, since it is larger than the sum of its proper divisors (40473291).

55190745 is a wasteful number, since it uses less digits than its factorization.

55190745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226472 (or 1226469 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 55190745 is about 7429.0473817307. The cubic root of 55190745 is about 380.7343716528.

The spelling of 55190745 in words is "fifty-five million, one hundred ninety thousand, seven hundred forty-five".