51323901 has 8 divisors (see below), whose sum is σ = 72457344. Its totient is φ = 32203200.

The previous prime is 51323893. The next prime is 51323903. The reversal of 51323901 is 10932315.

It is a happy number.

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

It is not a de Polignac number, because 51323901 - 2³ = 51323893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51323903) 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, 503125 + ... + 503226.

It is an arithmetic number, because the mean of its divisors is an integer number (9057168).

Almost surely, 2^51323901 is an apocalyptic number.

51323901 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51323901 is a deficient number, since it is larger than the sum of its proper divisors (21133443).

51323901 is a wasteful number, since it uses less digits than its factorization.

51323901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006371.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 51323901 is about 7164.0701420352. The cubic root of 51323901 is about 371.6263953453.

The spelling of 51323901 in words is "fifty-one million, three hundred twenty-three thousand, nine hundred one".