51623236 has 12 divisors (see below), whose sum is σ = 103246528. Its totient is φ = 22124232.

The previous prime is 51623227. The next prime is 51623279. The reversal of 51623236 is 63232615.

51623236 is an admirable number.

It is a super-2 number, since 2×51623236² = 5329916990223392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1843687 = 51623236 / (5 + 1 + 6 + 2 + 3 + 2 + 3 + 6).

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, 921816 + ... + 921871.

Almost surely, 2^51623236 is an apocalyptic number.

It is an amenable number.

51623236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51623236 is a wasteful number, since it uses less digits than its factorization.

51623236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843698 (or 1843696 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 51623236 is about 7184.9311757316. The cubic root of 51623236 is about 372.3474708461.

The spelling of 51623236 in words is "fifty-one million, six hundred twenty-three thousand, two hundred thirty-six".