51476645 has 16 divisors (see below), whose sum is σ = 70319232. Its totient is φ = 35808960.

The previous prime is 51476627. The next prime is 51476699. The reversal of 51476645 is 54667415.

It is a de Polignac number, because none of the positive numbers 2^k-51476645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51476599 and 51476608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19082 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (4394952).

Almost surely, 2^51476645 is an apocalyptic number.

51476645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51476645 is a deficient number, since it is larger than the sum of its proper divisors (18842587).

51476645 is a wasteful number, since it uses less digits than its factorization.

51476645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40732.

The product of its digits is 100800, while the sum is 38.

The square root of 51476645 is about 7174.7226427229. The cubic root of 51476645 is about 371.9946934341.

The spelling of 51476645 in words is "fifty-one million, four hundred seventy-six thousand, six hundred forty-five".