247515 has 16 divisors (see below), whose sum is σ = 410400. Its totient is φ = 127232.

The previous prime is 247501. The next prime is 247519. The reversal of 247515 is 515742.

It is a cyclic number.

It is not a de Polignac number, because 247515 - 2⁶ = 247451 is a prime.

It is a super-2 number, since 2×247515² = 122527350450, which contains 22 as substring.

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247515.

It is not an unprimeable number, because it can be changed into a prime (247519) 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, 151 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (25650).

2²⁴⁷⁵¹⁵ is an apocalyptic number.

247515 is a deficient number, since it is larger than the sum of its proper divisors (162885).

247515 is a wasteful number, since it uses less digits than its factorization.

247515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its digits is 1400, while the sum is 24.

The square root of 247515 is about 497.5087938921. The cubic root of 247515 is about 62.7866301477.

The spelling of 247515 in words is "two hundred forty-seven thousand, five hundred fifteen".