2155357480 has 32 divisors (see below), whose sum is σ = 4892481000. Its totient is φ = 854511616.

The previous prime is 2155357447. The next prime is 2155357483. The reversal of 2155357480 is 847535512.

It can be written as a sum of positive squares in 4 ways, for example, as 1359101956 + 796255524 = 36866^2 + 28218^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2155357483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233905 + ... + 242944.

Almost surely, 2^2155357480 is an apocalyptic number.

2155357480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155357480 is an abundant number, since it is smaller than the sum of its proper divisors (2737123520).

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

2155357480 is a wasteful number, since it uses less digits than its factorization.

2155357480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476973 (or 476969 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 2155357480 is about 46425.8277255236. The cubic root of 2155357480 is about 1291.7340380445.

The spelling of 2155357480 in words is "two billion, one hundred fifty-five million, three hundred fifty-seven thousand, four hundred eighty".