2155050570 has 64 divisors (see below), whose sum is σ = 5328086400. Its totient is φ = 557445888.

The previous prime is 2155050551. The next prime is 2155050587. The reversal of 2155050570 is 750505512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384609 + ... + 390171.

It is an arithmetic number, because the mean of its divisors is an integer number (83251350).

Almost surely, 2^2155050570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155050570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664043200).

2155050570 is an abundant number, since it is smaller than the sum of its proper divisors (3173035830).

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

2155050570 is a wasteful number, since it uses less digits than its factorization.

2155050570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 2155050570 is about 46422.5222279014. The cubic root of 2155050570 is about 1291.6727234032.

The spelling of 2155050570 in words is "two billion, one hundred fifty-five million, fifty thousand, five hundred seventy".