51455271 has 32 divisors (see below), whose sum is σ = 82298880. Its totient is φ = 27979776.

The previous prime is 51455267. The next prime is 51455273. The reversal of 51455271 is 17255415.

It is not a de Polignac number, because 51455271 - 2² = 51455267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35815 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (2571840).

Almost surely, 2^51455271 is an apocalyptic number.

51455271 is a deficient number, since it is larger than the sum of its proper divisors (30843609).

51455271 is a wasteful number, since it uses less digits than its factorization.

51455271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its digits is 7000, while the sum is 30.

The square root of 51455271 is about 7173.2329531391. The cubic root of 51455271 is about 371.9432000802.

The spelling of 51455271 in words is "fifty-one million, four hundred fifty-five thousand, two hundred seventy-one".