72451150 has 36 divisors (see below), whose sum is σ = 141180696. Its totient is φ = 27610000.

The previous prime is 72451133. The next prime is 72451157. The reversal of 72451150 is 5115427.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72451157) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 288525 + ... + 288775.

It is an arithmetic number, because the mean of its divisors is an integer number (3921686).

Almost surely, 2^72451150 is an apocalyptic number.

72451150 is a deficient number, since it is larger than the sum of its proper divisors (68729546).

72451150 is a wasteful number, since it uses less digits than its factorization.

72451150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 72451150 is about 8511.8241288222. The cubic root of 72451150 is about 416.8838725300.

Adding to 72451150 its reverse (5115427), we get a palindrome (77566577).

The spelling of 72451150 in words is "seventy-two million, four hundred fifty-one thousand, one hundred fifty".