2151247495 has 4 divisors (see below), whose sum is σ = 2581497000. Its totient is φ = 1720997992.

The previous prime is 2151247493. The next prime is 2151247513. The reversal of 2151247495 is 5947421512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2151247495 - 2¹ = 2151247493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151247493) 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, 215124745 + ... + 215124754.

It is an arithmetic number, because the mean of its divisors is an integer number (645374250).

Almost surely, 2^2151247495 is an apocalyptic number.

2151247495 is a deficient number, since it is larger than the sum of its proper divisors (430249505).

2151247495 is an equidigital number, since it uses as much as digits as its factorization.

2151247495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430249504.

The product of its digits is 100800, while the sum is 40.

The square root of 2151247495 is about 46381.5426112586. The cubic root of 2151247495 is about 1290.9124596170.

The spelling of 2151247495 in words is "two billion, one hundred fifty-one million, two hundred forty-seven thousand, four hundred ninety-five".