51346421 has 8 divisors (see below), whose sum is σ = 58760640. Its totient is φ = 43951968.

The previous prime is 51346403. The next prime is 51346433. The reversal of 51346421 is 12464315.

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

It is a cyclic number.

It is not a de Polignac number, because 51346421 - 2⁶ = 51346357 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 (51346441) 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, 1130 + ... + 10196.

It is an arithmetic number, because the mean of its divisors is an integer number (7345080).

Almost surely, 2^51346421 is an apocalyptic number.

It is an amenable number.

51346421 is a deficient number, since it is larger than the sum of its proper divisors (7414219).

51346421 is an equidigital number, since it uses as much as digits as its factorization.

51346421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883.

The product of its digits is 2880, while the sum is 26.

The square root of 51346421 is about 7165.6417018994. The cubic root of 51346421 is about 371.6807417122.

The spelling of 51346421 in words is "fifty-one million, three hundred forty-six thousand, four hundred twenty-one".