55074731 has 4 divisors (see below), whose sum is σ = 55562232. Its totient is φ = 54587232.

The previous prime is 55074727. The next prime is 55074739. The reversal of 55074731 is 13747055.

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

It is a cyclic number.

It is not a de Polignac number, because 55074731 - 2² = 55074727 is a prime.

It is a super-2 number, since 2×55074731² = 6066451989444722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55074739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243581 + ... + 243806.

It is an arithmetic number, because the mean of its divisors is an integer number (13890558).

Almost surely, 2^55074731 is an apocalyptic number.

55074731 is a deficient number, since it is larger than the sum of its proper divisors (487501).

55074731 is a wasteful number, since it uses less digits than its factorization.

55074731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487500.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 55074731 is about 7421.2351397864. The cubic root of 55074731 is about 380.4674096032.

The spelling of 55074731 in words is "fifty-five million, seventy-four thousand, seven hundred thirty-one".