2155471372 has 6 divisors (see below), whose sum is σ = 3772074908. Its totient is φ = 1077735684.

The previous prime is 2155471349. The next prime is 2155471379. The reversal of 2155471372 is 2731745512.

It is not an unprimeable number, because it can be changed into a prime (2155471379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269433918 + ... + 269433925.

Almost surely, 2^2155471372 is an apocalyptic number.

It is an amenable number.

2155471372 is a deficient number, since it is larger than the sum of its proper divisors (1616603536).

2155471372 is a wasteful number, since it uses less digits than its factorization.

2155471372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538867847 (or 538867845 counting only the distinct ones).

The product of its digits is 58800, while the sum is 37.

The square root of 2155471372 is about 46427.0543110372. The cubic root of 2155471372 is about 1291.7567899674.

The spelling of 2155471372 in words is "two billion, one hundred fifty-five million, four hundred seventy-one thousand, three hundred seventy-two".