51419081 has 24 divisors (see below), whose sum is σ = 62052480. Its totient is φ = 42457632.

The previous prime is 51419041. The next prime is 51419113. The reversal of 51419081 is 18091415.

It is a de Polignac number, because none of the positive numbers 2^k-51419081 is a prime.

It is a super-2 number, since 2×51419081² = 5287843781769122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51419041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191015 + ... + 191283.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^51419081 is an apocalyptic number.

It is an amenable number.

51419081 is a deficient number, since it is larger than the sum of its proper divisors (10633399).

51419081 is a wasteful number, since it uses less digits than its factorization.

51419081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 51419081 is about 7170.7099369588. The cubic root of 51419081 is about 371.8559801114.

The spelling of 51419081 in words is "fifty-one million, four hundred nineteen thousand, eighty-one".