51623146 has 8 divisors (see below), whose sum is σ = 78120324. Its totient is φ = 25583040.

The previous prime is 51623137. The next prime is 51623147. The reversal of 51623146 is 64132615.

It can be written as a sum of positive squares in 2 ways, for example, as 47761921 + 3861225 = 6911^2 + 1965^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51623147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113985 + ... + 114436.

Almost surely, 2^51623146 is an apocalyptic number.

51623146 is a deficient number, since it is larger than the sum of its proper divisors (26497178).

51623146 is a wasteful number, since it uses less digits than its factorization.

51623146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228536.

The product of its digits is 4320, while the sum is 28.

The square root of 51623146 is about 7184.9249126209. The cubic root of 51623146 is about 372.3472544623.

The spelling of 51623146 in words is "fifty-one million, six hundred twenty-three thousand, one hundred forty-six".