52145722 has 4 divisors (see below), whose sum is σ = 78218586. Its totient is φ = 26072860.

The previous prime is 52145719. The next prime is 52145777. The reversal of 52145722 is 22754125.

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., 48149721 + 3996001 = 6939^2 + 1999^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13036429 + ... + 13036432.

Almost surely, 2^52145722 is an apocalyptic number.

52145722 is a deficient number, since it is larger than the sum of its proper divisors (26072864).

52145722 is a wasteful number, since it uses less digits than its factorization.

52145722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26072863.

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

The square root of 52145722 is about 7221.1994848501. The cubic root of 52145722 is about 373.5994501090.

Adding to 52145722 its reverse (22754125), we get a palindrome (74899847).

The spelling of 52145722 in words is "fifty-two million, one hundred forty-five thousand, seven hundred twenty-two".