51452278 has 8 divisors (see below), whose sum is σ = 77209272. Its totient is φ = 25715856.

The previous prime is 51452267. The next prime is 51452309. The reversal of 51452278 is 87225415.

It is a happy number.

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

It is a super-2 number, since 2×51452278² = 5294673822778568, which contains 22 as substring.

It is a congruent number.

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, 5601 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (9651159).

Almost surely, 2^51452278 is an apocalyptic number.

51452278 is a deficient number, since it is larger than the sum of its proper divisors (25756994).

51452278 is a wasteful number, since it uses less digits than its factorization.

51452278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10286.

The product of its digits is 22400, while the sum is 34.

The square root of 51452278 is about 7173.0243272974. The cubic root of 51452278 is about 371.9359883307.

The spelling of 51452278 in words is "fifty-one million, four hundred fifty-two thousand, two hundred seventy-eight".