51351552 has 156 divisors (see below), whose sum is σ = 170372800. Its totient is φ = 14598144.

The previous prime is 51351551. The next prime is 51351563. The reversal of 51351552 is 25515315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351551) 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, 257949 + ... + 258147.

Almost surely, 2^51351552 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 51351552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85186400).

51351552 is an abundant number, since it is smaller than the sum of its proper divisors (119021248).

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

51351552 is a wasteful number, since it uses less digits than its factorization.

51351552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 211 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 51351552 is about 7165.9997209043. Note that the first 3 decimals coincide. The cubic root of 51351552 is about 371.6931218698.

Adding to 51351552 its reverse (25515315), we get a palindrome (76866867).

The spelling of 51351552 in words is "fifty-one million, three hundred fifty-one thousand, five hundred fifty-two".