2145255570 has 64 divisors (see below), whose sum is σ = 5917968000. Its totient is φ = 552339648.

The previous prime is 2145255569. The next prime is 2145255577. The reversal of 2145255570 is 755525412.

2145255570 is a `hidden beast` number, since 2 + 14 + 525 + 55 + 70 = 666.

It is not an unprimeable number, because it can be changed into a prime (2145255577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129160 + ... + 144819.

It is an arithmetic number, because the mean of its divisors is an integer number (92468250).

Almost surely, 2^2145255570 is an apocalyptic number.

2145255570 is an abundant number, since it is smaller than the sum of its proper divisors (3772712430).

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

2145255570 is a wasteful number, since it uses less digits than its factorization.

2145255570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274024 (or 274018 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The square root of 2145255570 is about 46316.9037177573. The cubic root of 2145255570 is about 1289.7128078899.

The spelling of 2145255570 in words is "two billion, one hundred forty-five million, two hundred fifty-five thousand, five hundred seventy".