51308152 has 16 divisors (see below), whose sum is σ = 109946160. Its totient is φ = 21989184.

The previous prime is 51308149. The next prime is 51308219. The reversal of 51308152 is 25180315.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458053 + ... + 458164.

It is an arithmetic number, because the mean of its divisors is an integer number (6871635).

Almost surely, 2^51308152 is an apocalyptic number.

It is an amenable number.

51308152 is an abundant number, since it is smaller than the sum of its proper divisors (58638008).

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

51308152 is a wasteful number, since it uses less digits than its factorization.

51308152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916230 (or 916226 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 51308152 is about 7162.9708920252. The cubic root of 51308152 is about 371.5883796402.

Adding to 51308152 its reverse (25180315), we get a palindrome (76488467).

The spelling of 51308152 in words is "fifty-one million, three hundred eight thousand, one hundred fifty-two".