51108772 has 48 divisors (see below), whose sum is σ = 105840000. Its totient is φ = 21288960.

The previous prime is 51108769. The next prime is 51108779. The reversal of 51108772 is 27780115.

It is a happy number.

It is a super-2 number, since 2×51108772² = 5224213150695968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51108779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113604 + ... + 114052.

It is an arithmetic number, because the mean of its divisors is an integer number (2205000).

Almost surely, 2^51108772 is an apocalyptic number.

51108772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51108772 is an abundant number, since it is smaller than the sum of its proper divisors (54731228).

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

51108772 is a wasteful number, since it uses less digits than its factorization.

51108772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 51108772 is about 7149.0399355438. The cubic root of 51108772 is about 371.1064324121.

Adding to 51108772 its reverse (27780115), we get a palindrome (78888887).

The spelling of 51108772 in words is "fifty-one million, one hundred eight thousand, seven hundred seventy-two".