2515157720 has 96 divisors (see below), whose sum is σ = 5986120320. Its totient is φ = 950100480.

The previous prime is 2515157707. The next prime is 2515157753. The reversal of 2515157720 is 277515152.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2292212 + ... + 2293308.

It is an arithmetic number, because the mean of its divisors is an integer number (62355420).

Almost surely, 2^2515157720 is an apocalyptic number.

2515157720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2515157720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2993060160).

2515157720 is an abundant number, since it is smaller than the sum of its proper divisors (3470962600).

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

2515157720 is a wasteful number, since it uses less digits than its factorization.

2515157720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 2515157720 is about 50151.3481374130. The cubic root of 2515157720 is about 1359.9462421081.

The spelling of 2515157720 in words is "two billion, five hundred fifteen million, one hundred fifty-seven thousand, seven hundred twenty".