72251000 has 32 divisors (see below), whose sum is σ = 169069680. Its totient is φ = 28900000.

The previous prime is 72250999. The next prime is 72251009. The reversal of 72251000 is 15227.

It is a self number, because there is not a number n which added to its sum of digits gives 72251000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72251009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35126 + ... + 37125.

Almost surely, 2^72251000 is an apocalyptic number.

It is an amenable number.

72251000 is an abundant number, since it is smaller than the sum of its proper divisors (96818680).

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

72251000 is a wasteful number, since it uses less digits than its factorization.

72251000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72272 (or 72258 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 72251000 is about 8500.0588233259. The cubic root of 72251000 is about 416.4996308244.

Adding to 72251000 its reverse (15227), we get a palindrome (72266227).

The spelling of 72251000 in words is "seventy-two million, two hundred fifty-one thousand".