152721115 has 16 divisors (see below), whose sum is σ = 194415552. Its totient is φ = 114770944.

The previous prime is 152721091. The next prime is 152721119. The reversal of 152721115 is 511127251.

It is not a de Polignac number, because 152721115 - 2⁷ = 152720987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152721115.

It is not an unprimeable number, because it can be changed into a prime (152721119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53607 + ... + 56383.

It is an arithmetic number, because the mean of its divisors is an integer number (12150972).

Almost surely, 2^152721115 is an apocalyptic number.

152721115 is a deficient number, since it is larger than the sum of its proper divisors (41694437).

152721115 is a wasteful number, since it uses less digits than its factorization.

152721115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446.

The product of its digits is 700, while the sum is 25.

The square root of 152721115 is about 12358.0384770400. The cubic root of 152721115 is about 534.5229567161.

Adding to 152721115 its reverse (511127251), we get a palindrome (663848366).

The spelling of 152721115 in words is "one hundred fifty-two million, seven hundred twenty-one thousand, one hundred fifteen".