51116506 has 24 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 21799512.

The previous prime is 51116503. The next prime is 51116509. The reversal of 51116506 is 60561115.

It is an interprime number because it is at equal distance from previous prime (51116503) and next prime (51116509).

It is a super-2 number, since 2×51116506² = 5225794371296072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51116503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20685 + ... + 23023.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^51116506 is an apocalyptic number.

51116506 is a deficient number, since it is larger than the sum of its proper divisors (38514854).

51116506 is a wasteful number, since it uses less digits than its factorization.

51116506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 51116506 is about 7149.5808268737. The cubic root of 51116506 is about 371.1251506104.

The spelling of 51116506 in words is "fifty-one million, one hundred sixteen thousand, five hundred six".