2154547 has 4 divisors (see below), whose sum is σ = 2212816. Its totient is φ = 2096280.

The previous prime is 2154541. The next prime is 2154553. The reversal of 2154547 is 7454512.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2154541) and next prime (2154553).

It is a cyclic number.

It is not a de Polignac number, because 2154547 - 2³ = 2154539 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29079 + ... + 29152.

It is an arithmetic number, because the mean of its divisors is an integer number (553204).

2^2154547 is an apocalyptic number.

2154547 is a deficient number, since it is larger than the sum of its proper divisors (58269).

2154547 is an equidigital number, since it uses as much as digits as its factorization.

2154547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58268.

The product of its digits is 5600, while the sum is 28.

The square root of 2154547 is about 1467.8375250688. The cubic root of 2154547 is about 129.1572107311.

It can be divided in two parts, 2154 and 547, that added together give a triangular number (2701 = T₇₃).

The spelling of 2154547 in words is "two million, one hundred fifty-four thousand, five hundred forty-seven".