51404627 has 4 divisors (see below), whose sum is σ = 51477840. Its totient is φ = 51331416.

The previous prime is 51404623. The next prime is 51404677. The reversal of 51404627 is 72640415.

51404627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72640415 = 5 ⋅14528083.

It is a cyclic number.

It is not a de Polignac number, because 51404627 - 2² = 51404623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51404627.

It is not an unprimeable number, because it can be changed into a prime (51404621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35543 + ... + 36960.

It is an arithmetic number, because the mean of its divisors is an integer number (12869460).

Almost surely, 2^51404627 is an apocalyptic number.

51404627 is a deficient number, since it is larger than the sum of its proper divisors (73213).

51404627 is an equidigital number, since it uses as much as digits as its factorization.

51404627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73212.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 51404627 is about 7169.7020161231. The cubic root of 51404627 is about 371.8211337085.

The spelling of 51404627 in words is "fifty-one million, four hundred four thousand, six hundred twenty-seven".