51464927 has 4 divisors (see below), whose sum is σ = 52170000. Its totient is φ = 50759856.

The previous prime is 51464923. The next prime is 51464951. The reversal of 51464927 is 72946415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51464927 - 2² = 51464923 is a prime.

It is a super-2 number, since 2×51464927² = 5297277422230658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51464921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352427 + ... + 352572.

It is an arithmetic number, because the mean of its divisors is an integer number (13042500).

Almost surely, 2^51464927 is an apocalyptic number.

51464927 is a deficient number, since it is larger than the sum of its proper divisors (705073).

51464927 is an equidigital number, since it uses as much as digits as its factorization.

51464927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705072.

The product of its digits is 60480, while the sum is 38.

The square root of 51464927 is about 7173.9059793114. The cubic root of 51464927 is about 371.9664646803.

The spelling of 51464927 in words is "fifty-one million, four hundred sixty-four thousand, nine hundred twenty-seven".