51401311 has 8 divisors (see below), whose sum is σ = 57264480. Its totient is φ = 45810912.

The previous prime is 51401303. The next prime is 51401323. The reversal of 51401311 is 11310415.

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 51401311 - 2³ = 51401303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51401381) 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, 67795 + ... + 68548.

It is an arithmetic number, because the mean of its divisors is an integer number (7158060).

Almost surely, 2^51401311 is an apocalyptic number.

51401311 is a deficient number, since it is larger than the sum of its proper divisors (5863169).

51401311 is a wasteful number, since it uses less digits than its factorization.

51401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136385.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51401311 is about 7169.4707614998. The cubic root of 51401311 is about 371.8131384141.

Adding to 51401311 its reverse (11310415), we get a palindrome (62711726).

The spelling of 51401311 in words is "fifty-one million, four hundred one thousand, three hundred eleven".