2315420551 has 4 divisors (see below), whose sum is σ = 2315763832. Its totient is φ = 2315077272.

The previous prime is 2315420537. The next prime is 2315420567. The reversal of 2315420551 is 1550245132.

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 2315420551 - 2¹¹ = 2315418503 is a prime.

It is a super-2 number, since 2×2315420551² = 10722344655986287202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315426551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161316 + ... + 175081.

It is an arithmetic number, because the mean of its divisors is an integer number (578940958).

Almost surely, 2^2315420551 is an apocalyptic number.

2315420551 is a deficient number, since it is larger than the sum of its proper divisors (343281).

2315420551 is an equidigital number, since it uses as much as digits as its factorization.

2315420551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343280.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2315420551 is about 48118.8170157995. The cubic root of 2315420551 is about 1322.9495854613.

Adding to 2315420551 its reverse (1550245132), we get a palindrome (3865665683).

The spelling of 2315420551 in words is "two billion, three hundred fifteen million, four hundred twenty thousand, five hundred fifty-one".