72530252 has 6 divisors (see below), whose sum is σ = 126927948. Its totient is φ = 36265124.

The previous prime is 72530243. The next prime is 72530257. The reversal of 72530252 is 25203527.

It is not an unprimeable number, because it can be changed into a prime (72530257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9066278 + ... + 9066285.

It is an arithmetic number, because the mean of its divisors is an integer number (21154658).

Almost surely, 2^72530252 is an apocalyptic number.

It is an amenable number.

72530252 is a deficient number, since it is larger than the sum of its proper divisors (54397696).

72530252 is a wasteful number, since it uses less digits than its factorization.

72530252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18132567 (or 18132565 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 72530252 is about 8516.4694562947. The cubic root of 72530252 is about 417.0355349682.

Adding to 72530252 its reverse (25203527), we get a palindrome (97733779).

The spelling of 72530252 in words is "seventy-two million, five hundred thirty thousand, two hundred fifty-two".