315240551 has 4 divisors (see below), whose sum is σ = 315306600. Its totient is φ = 315174504.

The previous prime is 315240547. The next prime is 315240593. The reversal of 315240551 is 155042513.

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 315240551 - 2² = 315240547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315240551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315240521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25256 + ... + 35613.

It is an arithmetic number, because the mean of its divisors is an integer number (78826650).

Almost surely, 2^315240551 is an apocalyptic number.

315240551 is a deficient number, since it is larger than the sum of its proper divisors (66049).

315240551 is an equidigital number, since it uses as much as digits as its factorization.

315240551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66048.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 315240551 is about 17755.0148127226. The cubic root of 315240551 is about 680.5823665908.

The spelling of 315240551 in words is "three hundred fifteen million, two hundred forty thousand, five hundred fifty-one".