51154572 has 96 divisors (see below), whose sum is σ = 142320640. Its totient is φ = 13996800.

The previous prime is 51154561. The next prime is 51154573. The reversal of 51154572 is 27545115.

It is not an unprimeable number, because it can be changed into a prime (51154573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338697 + ... + 338847.

Almost surely, 2^51154572 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 51154572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71160320).

51154572 is an abundant number, since it is smaller than the sum of its proper divisors (91166068).

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

51154572 is a wasteful number, since it uses less digits than its factorization.

51154572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its digits is 7000, while the sum is 30.

The square root of 51154572 is about 7152.2424455551. The cubic root of 51154572 is about 371.2172522668.

Adding to 51154572 its reverse (27545115), we get a palindrome (78699687).

The spelling of 51154572 in words is "fifty-one million, one hundred fifty-four thousand, five hundred seventy-two".