72577151 has 4 divisors (see below), whose sum is σ = 72629232. Its totient is φ = 72525072.

The previous prime is 72577117. The next prime is 72577157. The reversal of 72577151 is 15177527.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72577151 - 2¹⁴ = 72560767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72577157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23891 + ... + 26756.

It is an arithmetic number, because the mean of its divisors is an integer number (18157308).

Almost surely, 2^72577151 is an apocalyptic number.

72577151 is a deficient number, since it is larger than the sum of its proper divisors (52081).

72577151 is a wasteful number, since it uses less digits than its factorization.

72577151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52080.

The product of its digits is 17150, while the sum is 35.

The square root of 72577151 is about 8519.2224410447. Note that the first 3 decimals coincide. The cubic root of 72577151 is about 417.1254024600.

The spelling of 72577151 in words is "seventy-two million, five hundred seventy-seven thousand, one hundred fifty-one".