51623005 has 16 divisors (see below), whose sum is σ = 72445824. Its totient is φ = 34574400.

The previous prime is 51623003. The next prime is 51623009. The reversal of 51623005 is 50032615.

It is a happy number.

It is not a de Polignac number, because 51623005 - 2¹ = 51623003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51623003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15646 + ... + 18655.

It is an arithmetic number, because the mean of its divisors is an integer number (4527864).

Almost surely, 2^51623005 is an apocalyptic number.

It is an amenable number.

51623005 is a deficient number, since it is larger than the sum of its proper divisors (20822819).

51623005 is a wasteful number, since it uses less digits than its factorization.

51623005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34356.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51623005 is about 7184.9151004031. The cubic root of 51623005 is about 372.3469154605.

The spelling of 51623005 in words is "fifty-one million, six hundred twenty-three thousand, five".