51472522 has 4 divisors (see below), whose sum is σ = 77208786. Its totient is φ = 25736260.

The previous prime is 51472511. The next prime is 51472523. The reversal of 51472522 is 22527415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42237001 + 9235521 = 6499^2 + 3039^2 .

It is not an unprimeable number, because it can be changed into a prime (51472523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12868129 + ... + 12868132.

Almost surely, 2^51472522 is an apocalyptic number.

51472522 is a deficient number, since it is larger than the sum of its proper divisors (25736264).

51472522 is a wasteful number, since it uses less digits than its factorization.

51472522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736263.

The product of its digits is 5600, while the sum is 28.

The square root of 51472522 is about 7174.4353087891. The cubic root of 51472522 is about 371.9847615834.

Adding to 51472522 its reverse (22527415), we get a palindrome (73999937).

The spelling of 51472522 in words is "fifty-one million, four hundred seventy-two thousand, five hundred twenty-two".