2157135050 has 48 divisors (see below), whose sum is σ = 4697324352. Its totient is φ = 721545600.

The previous prime is 2157135041. The next prime is 2157135059. The reversal of 2157135050 is 505317512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2157135041) and next prime (2157135059).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2157135059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60812 + ... + 89511.

It is an arithmetic number, because the mean of its divisors is an integer number (97860924).

Almost surely, 2^2157135050 is an apocalyptic number.

2157135050 is an abundant number, since it is smaller than the sum of its proper divisors (2540189302).

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

2157135050 is a wasteful number, since it uses less digits than its factorization.

2157135050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150383 (or 150378 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 2157135050 is about 46444.9679728601. The cubic root of 2157135050 is about 1292.0890474814.

The spelling of 2157135050 in words is "two billion, one hundred fifty-seven million, one hundred thirty-five thousand, fifty".