2154056 has 8 divisors (see below), whose sum is σ = 4038870. Its totient is φ = 1077024.

The previous prime is 2154043. The next prime is 2154059. The reversal of 2154056 is 6504512.

It can be written as a sum of positive squares in only one way, i.e., 2149156 + 4900 = 1466^2 + 70^2 .

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

It is a super-2 number, since 2×2154056² = 9279914502272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134621 + ... + 134636.

2^2154056 is an apocalyptic number.

It is an amenable number.

2154056 is a deficient number, since it is larger than the sum of its proper divisors (1884814).

2154056 is a wasteful number, since it uses less digits than its factorization.

2154056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269263 (or 269259 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2154056 is about 1467.6702626953. The cubic root of 2154056 is about 129.1473987677.

Adding to 2154056 its reverse (6504512), we get a palindrome (8658568).

The spelling of 2154056 in words is "two million, one hundred fifty-four thousand, fifty-six".