249132543 has 16 divisors (see below), whose sum is σ = 362641536. Its totient is φ = 150878240.

The previous prime is 249132529. The next prime is 249132547. The reversal of 249132543 is 345231942.

It is a cyclic number.

It is not a de Polignac number, because 249132543 - 2⁵ = 249132511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249132547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76180 + ... + 79382.

It is an arithmetic number, because the mean of its divisors is an integer number (22665096).

Almost surely, 2^249132543 is an apocalyptic number.

249132543 is a deficient number, since it is larger than the sum of its proper divisors (113508993).

249132543 is a wasteful number, since it uses less digits than its factorization.

249132543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574.

The product of its digits is 25920, while the sum is 33.

The square root of 249132543 is about 15783.9330649873. The cubic root of 249132543 is about 629.2310623697.

The spelling of 249132543 in words is "two hundred forty-nine million, one hundred thirty-two thousand, five hundred forty-three".