51102684 has 24 divisors (see below), whose sum is σ = 132488720. Its totient is φ = 17034192.

The previous prime is 51102683. The next prime is 51102691. The reversal of 51102684 is 48620115.

It is a super-2 number, since 2×51102684² = 5222968624007712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236479 + ... + 236694.

Almost surely, 2^51102684 is an apocalyptic number.

51102684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51102684 is an abundant number, since it is smaller than the sum of its proper divisors (81386036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51102684 is a wasteful number, since it uses less digits than its factorization.

51102684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473186 (or 473178 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 51102684 is about 7148.6141314244. The cubic root of 51102684 is about 371.0916966137.

Adding to 51102684 its reverse (48620115), we get a palindrome (99722799).

The spelling of 51102684 in words is "fifty-one million, one hundred two thousand, six hundred eighty-four".