5261551923 has 6 divisors (see below), whose sum is σ = 7015570084. Its totient is φ = 3507617524.

The previous prime is 5261551913. The next prime is 5261551949. The reversal of 5261551923 is 3291551625.

It is not a de Polignac number, because 5261551923 - 2⁶ = 5261551859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5261551903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104698 + ... + 146576.

Almost surely, 2^5261551923 is an apocalyptic number.

5261551923 is a deficient number, since it is larger than the sum of its proper divisors (1754018161).

5261551923 is an frugal number, since it uses more digits than its factorization.

5261551923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83761 (or 41882 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The square root of 5261551923 is about 72536.5557701770. Note that the first 3 decimals coincide. The cubic root of 5261551923 is about 1739.2871439146.

The spelling of 5261551923 in words is "five billion, two hundred sixty-one million, five hundred fifty-one thousand, nine hundred twenty-three".