5315123551 has 4 divisors (see below), whose sum is σ = 5316876712. Its totient is φ = 5313370392.

The previous prime is 5315123543. The next prime is 5315123563. The reversal of 5315123551 is 1553215135.

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 5315123551 - 2³ = 5315123543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5315123531) 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, 872025 + ... + 878098.

It is an arithmetic number, because the mean of its divisors is an integer number (1329219178).

Almost surely, 2^5315123551 is an apocalyptic number.

5315123551 is a deficient number, since it is larger than the sum of its proper divisors (1753161).

5315123551 is a wasteful number, since it uses less digits than its factorization.

5315123551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753160.

The product of its digits is 11250, while the sum is 31.

The square root of 5315123551 is about 72904.8938755143. The cubic root of 5315123551 is about 1745.1701983126.

Adding to 5315123551 its reverse (1553215135), we get a palindrome (6868338686).

The spelling of 5315123551 in words is "five billion, three hundred fifteen million, one hundred twenty-three thousand, five hundred fifty-one".