2155252030 has 32 divisors (see below), whose sum is σ = 4055842368. Its totient is φ = 823046400.

The previous prime is 2155252013. The next prime is 2155252039. The reversal of 2155252030 is 302525512.

It is a happy number.

It is a super-2 number, since 2×2155252030² = 9290222625638241800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155251986 and 2155252004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155252039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115770 + ... + 133090.

It is an arithmetic number, because the mean of its divisors is an integer number (126745074).

Almost surely, 2^2155252030 is an apocalyptic number.

2155252030 is a deficient number, since it is larger than the sum of its proper divisors (1900590338).

2155252030 is a wasteful number, since it uses less digits than its factorization.

2155252030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17892.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2155252030 is about 46424.6920291347. The cubic root of 2155252030 is about 1291.7129718444.

Adding to 2155252030 its reverse (302525512), we get a palindrome (2457777542).

The spelling of 2155252030 in words is "two billion, one hundred fifty-five million, two hundred fifty-two thousand, thirty".