51623049 has 8 divisors (see below), whose sum is σ = 69157792. Its totient is φ = 34251840.

The previous prime is 51623041. The next prime is 51623051. The reversal of 51623049 is 94032615.

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

It is not a de Polignac number, because 51623049 - 2³ = 51623041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51623041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40144 + ... + 41409.

It is an arithmetic number, because the mean of its divisors is an integer number (8644724).

Almost surely, 2^51623049 is an apocalyptic number.

It is an amenable number.

51623049 is a deficient number, since it is larger than the sum of its proper divisors (17534743).

51623049 is a wasteful number, since it uses less digits than its factorization.

51623049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81767.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 51623049 is about 7184.9181623732. The cubic root of 51623049 is about 372.3470212484.

The spelling of 51623049 in words is "fifty-one million, six hundred twenty-three thousand, forty-nine".