51814402 has 8 divisors (see below), whose sum is σ = 82293516. Its totient is φ = 24383232.

The previous prime is 51814397. The next prime is 51814417. The reversal of 51814402 is 20441815.

It can be written as a sum of positive squares in 2 ways, for example, as 43811161 + 8003241 = 6619^2 + 2829^2 .

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, 761943 + ... + 762010.

Almost surely, 2^51814402 is an apocalyptic number.

51814402 is a deficient number, since it is larger than the sum of its proper divisors (30479114).

51814402 is a wasteful number, since it uses less digits than its factorization.

51814402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523972.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 51814402 is about 7198.2221416125. Note that the first 3 decimals coincide. The cubic root of 51814402 is about 372.8065179729.

The spelling of 51814402 in words is "fifty-one million, eight hundred fourteen thousand, four hundred two".