2156512 has 12 divisors (see below), whose sum is σ = 4245696. Its totient is φ = 1078240.

The previous prime is 2156507. The next prime is 2156521.

2156512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2156512² = 9301088012288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33664 + ... + 33727.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

2^2156512 is an apocalyptic number.

It is an amenable number.

2156512 is a deficient number, since it is larger than the sum of its proper divisors (2089184).

2156512 is an equidigital number, since it uses as much as digits as its factorization.

2156512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67401 (or 67393 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 2156512 is about 1468.5067245335. The cubic root of 2156512 is about 129.1964636541.

The spelling of 2156512 in words is "two million, one hundred fifty-six thousand, five hundred twelve".