2151522252 has 36 divisors (see below), whose sum is σ = 5932986696. Its totient is φ = 651976320.

The previous prime is 2151522251. The next prime is 2151522253. The reversal of 2151522252 is 2522251512.

It is a happy number.

2151522252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2151522251) and next prime (2151522253).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2151522251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2716173 + ... + 2716964.

It is an arithmetic number, because the mean of its divisors is an integer number (164805186).

Almost surely, 2^2151522252 is an apocalyptic number.

2151522252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2151522252 is an abundant number, since it is smaller than the sum of its proper divisors (3781464444).

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

2151522252 is a wasteful number, since it uses less digits than its factorization.

2151522252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433158 (or 5433153 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 2151522252 is about 46384.5044384437. The cubic root of 2151522252 is about 1290.9674156578.

Adding to 2151522252 its reverse (2522251512), we get a palindrome (4673773764).

The spelling of 2151522252 in words is "two billion, one hundred fifty-one million, five hundred twenty-two thousand, two hundred fifty-two".