2045547 has 32 divisors (see below), whose sum is σ = 3532800. Its totient is φ = 1145664.

The previous prime is 2045543. The next prime is 2045557. The reversal of 2045547 is 7455402.

It is not a de Polignac number, because 2045547 - 2² = 2045543 is a prime.

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

It is an Ulam number.

2045547 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045547.

It is not an unprimeable number, because it can be changed into a prime (2045543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14863 + ... + 14999.

It is an arithmetic number, because the mean of its divisors is an integer number (110400).

2^2045547 is an apocalyptic number.

2045547 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2045547 is a deficient number, since it is larger than the sum of its proper divisors (1487253).

2045547 is a wasteful number, since it uses less digits than its factorization.

2045547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 2045547 is about 1430.2262058849. The cubic root of 2045547 is about 126.9413621463.

It can be divided in two parts, 20455 and 47, that added together give a palindrome (20502).

The spelling of 2045547 in words is "two million, forty-five thousand, five hundred forty-seven".