55740578 has 4 divisors (see below), whose sum is σ = 83610870. Its totient is φ = 27870288.

The previous prime is 55740563. The next prime is 55740589. The reversal of 55740578 is 87504755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51509329 + 4231249 = 7177^2 + 2057^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13935143 + ... + 13935146.

Almost surely, 2^55740578 is an apocalyptic number.

55740578 is a deficient number, since it is larger than the sum of its proper divisors (27870292).

55740578 is a wasteful number, since it uses less digits than its factorization.

55740578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27870291.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 55740578 is about 7465.9612910864. The cubic root of 55740578 is about 381.9945404591.

The spelling of 55740578 in words is "fifty-five million, seven hundred forty thousand, five hundred seventy-eight".