2151510245 has 8 divisors (see below), whose sum is σ = 2591134584. Its totient is φ = 1714993344.

The previous prime is 2151510233. The next prime is 2151510269. The reversal of 2151510245 is 5420151512.

It can be written as a sum of positive squares in 4 ways, for example, as 591361 + 2150918884 = 769^2 + 46378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151510245 - 2²² = 2147315941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775334 + ... + 778103.

It is an arithmetic number, because the mean of its divisors is an integer number (323891823).

Almost surely, 2^2151510245 is an apocalyptic number.

It is an amenable number.

2151510245 is a deficient number, since it is larger than the sum of its proper divisors (439624339).

2151510245 is a wasteful number, since it uses less digits than its factorization.

2151510245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553719.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 2151510245 is about 46384.3750092636. The cubic root of 2151510245 is about 1290.9650141528.

Adding to 2151510245 its reverse (5420151512), we get a palindrome (7571661757).

The spelling of 2151510245 in words is "two billion, one hundred fifty-one million, five hundred ten thousand, two hundred forty-five".