55031774 has 8 divisors (see below), whose sum is σ = 94340208. Its totient is φ = 23585040.

The previous prime is 55031759. The next prime is 55031777. The reversal of 55031774 is 47713055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55031774² = 6056992299174152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55031774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55031777) 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, 1965407 + ... + 1965434.

It is an arithmetic number, because the mean of its divisors is an integer number (11792526).

Almost surely, 2^55031774 is an apocalyptic number.

55031774 is a deficient number, since it is larger than the sum of its proper divisors (39308434).

55031774 is a wasteful number, since it uses less digits than its factorization.

55031774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930850.

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

The square root of 55031774 is about 7418.3403804355. The cubic root of 55031774 is about 380.3684653184.

The spelling of 55031774 in words is "fifty-five million, thirty-one thousand, seven hundred seventy-four".