2154546 has 32 divisors (see below), whose sum is σ = 5071680. Its totient is φ = 675648.

The previous prime is 2154541. The next prime is 2154553. The reversal of 2154546 is 6454512.

It is a super-2 number, since 2×2154546² = 9284136932232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2154541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256 + ... + 2091.

It is an arithmetic number, because the mean of its divisors is an integer number (158490).

2^2154546 is an apocalyptic number.

2154546 is an abundant number, since it is smaller than the sum of its proper divisors (2917134).

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

2154546 is a wasteful number, since it uses less digits than its factorization.

2154546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2369 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2154546 is about 1467.8371844316. The cubic root of 2154546 is about 129.1571907489.

It can be divided in two parts, 215 and 4546, that added together give a square (4761 = 69²).

The spelling of 2154546 in words is "two million, one hundred fifty-four thousand, five hundred forty-six".