55782274 has 8 divisors (see below), whose sum is σ = 83742480. Its totient is φ = 27868116.

The previous prime is 55782247. The next prime is 55782313. The reversal of 55782274 is 47228755.

It is a happy number.

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

It is a super-3 number, since 3×55782274³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8304 + ... + 13435.

It is an arithmetic number, because the mean of its divisors is an integer number (10467810).

Almost surely, 2^55782274 is an apocalyptic number.

55782274 is a deficient number, since it is larger than the sum of its proper divisors (27960206).

55782274 is a wasteful number, since it uses less digits than its factorization.

55782274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024.

The product of its digits is 156800, while the sum is 40.

The square root of 55782274 is about 7468.7531757315. The cubic root of 55782274 is about 382.0897653688.

The spelling of 55782274 in words is "fifty-five million, seven hundred eighty-two thousand, two hundred seventy-four".