2002155252 has 12 divisors (see below), whose sum is σ = 4671695616. Its totient is φ = 667385080.

The previous prime is 2002155251. The next prime is 2002155257. The reversal of 2002155252 is 2525512002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2002155252² = 8017251306222367008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002155251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83423124 + ... + 83423147.

It is an arithmetic number, because the mean of its divisors is an integer number (389307968).

Almost surely, 2^2002155252 is an apocalyptic number.

It is an amenable number.

2002155252 is an abundant number, since it is smaller than the sum of its proper divisors (2669540364).

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

2002155252 is a wasteful number, since it uses less digits than its factorization.

2002155252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166846278 (or 166846276 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2002155252 is about 44745.4495116543. The cubic root of 2002155252 is about 1260.3734619839.

Adding to 2002155252 its reverse (2525512002), we get a palindrome (4527667254).

The spelling of 2002155252 in words is "two billion, two million, one hundred fifty-five thousand, two hundred fifty-two".