2151064 has 8 divisors (see below), whose sum is σ = 4033260. Its totient is φ = 1075528.

The previous prime is 2151031. The next prime is 2151073. The reversal of 2151064 is 4601512.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

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, 134434 + ... + 134449.

2^2151064 is an apocalyptic number.

It is an amenable number.

2151064 is a deficient number, since it is larger than the sum of its proper divisors (1882196).

2151064 is a wasteful number, since it uses less digits than its factorization.

2151064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268889 (or 268885 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2151064 is about 1466.6506059727. The cubic root of 2151064 is about 129.0875754912.

Adding to 2151064 its reverse (4601512), we get a palindrome (6752576).

The spelling of 2151064 in words is "two million, one hundred fifty-one thousand, sixty-four".