2151512 has 32 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 934560.

The previous prime is 2151511. The next prime is 2151517.

2151512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2151512² = 9258007772288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493 + ... + 2555.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^2151512 is an apocalyptic number.

2151512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

2151512 is an abundant number, since it is smaller than the sum of its proper divisors (2444968).

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

2151512 is a wasteful number, since it uses less digits than its factorization.

2151512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1099 counting only the distinct ones).

The product of its digits is 100, while the sum is 17.

The square root of 2151512 is about 1466.8033269665. The cubic root of 2151512 is about 129.0965365169.

The spelling of 2151512 in words is "two million, one hundred fifty-one thousand, five hundred twelve".