51909274 has 8 divisors (see below), whose sum is σ = 78458688. Its totient is φ = 25756380.

The previous prime is 51909257. The next prime is 51909287. The reversal of 51909274 is 47290915.

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

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, 98802 + ... + 99325.

It is an arithmetic number, because the mean of its divisors is an integer number (9807336).

Almost surely, 2^51909274 is an apocalyptic number.

51909274 is a deficient number, since it is larger than the sum of its proper divisors (26549414).

51909274 is a wasteful number, since it uses less digits than its factorization.

51909274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198260.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 51909274 is about 7204.8090883798. The cubic root of 51909274 is about 373.0339150785.

The spelling of 51909274 in words is "fifty-one million, nine hundred nine thousand, two hundred seventy-four".