51951592 has 128 divisors (see below), whose sum is σ = 132814080. Its totient is φ = 18585600.

The previous prime is 51951569. The next prime is 51951593. The reversal of 51951592 is 29515915.

It is a super-2 number, since 2×51951592² = 5397935822668928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51951593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1267092 + ... + 1267132.

It is an arithmetic number, because the mean of its divisors is an integer number (1037610).

Almost surely, 2^51951592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51951592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66407040).

51951592 is an abundant number, since it is smaller than the sum of its proper divisors (80862488).

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

51951592 is a wasteful number, since it uses less digits than its factorization.

51951592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 78 counting only the distinct ones).

The product of its digits is 20250, while the sum is 37.

The square root of 51951592 is about 7207.7452785181. The cubic root of 51951592 is about 373.1352570301.

The spelling of 51951592 in words is "fifty-one million, nine hundred fifty-one thousand, five hundred ninety-two".