1515252765 has 64 divisors (see below), whose sum is σ = 2746275840. Its totient is φ = 707815680.

The previous prime is 1515252737. The next prime is 1515252769. The reversal of 1515252765 is 5672525151.

It is not a de Polignac number, because 1515252765 - 2¹⁵ = 1515219997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515252769) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 586246 + ... + 588824.

It is an arithmetic number, because the mean of its divisors is an integer number (42910560).

Almost surely, 2^1515252765 is an apocalyptic number.

1515252765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1515252765 is a deficient number, since it is larger than the sum of its proper divisors (1231023075).

1515252765 is a wasteful number, since it uses less digits than its factorization.

1515252765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754.

The product of its digits is 105000, while the sum is 39.

The square root of 1515252765 is about 38926.2477642015. The cubic root of 1515252765 is about 1148.5811777722.

It can be divided in two parts, 151525 and 2765, that added together give a triangular number (154290 = T₅₅₅).

The spelling of 1515252765 in words is "one billion, five hundred fifteen million, two hundred fifty-two thousand, seven hundred sixty-five".