715121516 has 12 divisors (see below), whose sum is σ = 1291832640. Its totient is φ = 346026480.

The previous prime is 715121513. The next prime is 715121521. The reversal of 715121516 is 615121517.

It is a super-2 number, since 2×715121516² = 1022797565292276512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (715121513) 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, 2883431 + ... + 2883678.

It is an arithmetic number, because the mean of its divisors is an integer number (107652720).

Almost surely, 2^715121516 is an apocalyptic number.

It is an amenable number.

715121516 is a deficient number, since it is larger than the sum of its proper divisors (576711124).

715121516 is a wasteful number, since it uses less digits than its factorization.

715121516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767144 (or 5767142 counting only the distinct ones).

The product of its digits is 2100, while the sum is 29.

The square root of 715121516 is about 26741.7560380765. The cubic root of 715121516 is about 894.2520580437.

Subtracting from 715121516 its reverse (615121517), we obtain a palindrome (99999999).

The spelling of 715121516 in words is "seven hundred fifteen million, one hundred twenty-one thousand, five hundred sixteen".