7900543 has 8 divisors (see below), whose sum is σ = 9101312. Its totient is φ = 6717816.

The previous prime is 7900531. The next prime is 7900547. The reversal of 7900543 is 3450097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7900543 - 2¹⁷ = 7769471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (1137664).

Almost surely, 2^7900543 is an apocalyptic number.

7900543 is the 1778-th heptagonal number.

7900543 is a deficient number, since it is larger than the sum of its proper divisors (1200769).

7900543 is a wasteful number, since it uses less digits than its factorization.

7900543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 7900543 is about 2810.7904582163. The cubic root of 7900543 is about 199.1677331300.

The spelling of 7900543 in words is "seven million, nine hundred thousand, five hundred forty-three".