51323506 has 16 divisors (see below), whose sum is σ = 83026944. Its totient is φ = 23653584.

The previous prime is 51323501. The next prime is 51323521. The reversal of 51323506 is 60532315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51323501) 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, 30031 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (5189184).

Almost surely, 2^51323506 is an apocalyptic number.

51323506 is a deficient number, since it is larger than the sum of its proper divisors (31703438).

51323506 is a wasteful number, since it uses less digits than its factorization.

51323506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51323506 is about 7164.0425738545. The cubic root of 51323506 is about 371.6254419701.

The spelling of 51323506 in words is "fifty-one million, three hundred twenty-three thousand, five hundred six".