2155261592 has 16 divisors (see below), whose sum is σ = 4408489800. Its totient is φ = 979664320.

The previous prime is 2155261583. The next prime is 2155261597. The reversal of 2155261592 is 2951625512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155261597) 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, 12245717 + ... + 12245892.

Almost surely, 2^2155261592 is an apocalyptic number.

2155261592 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2155261592 is an abundant number, since it is smaller than the sum of its proper divisors (2253228208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155261592 is a wasteful number, since it uses less digits than its factorization.

2155261592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24491626 (or 24491622 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 2155261592 is about 46424.7950130100. The cubic root of 2155261592 is about 1291.7148821146.

The spelling of 2155261592 in words is "two billion, one hundred fifty-five million, two hundred sixty-one thousand, five hundred ninety-two".