80542603 has 4 divisors (see below), whose sum is σ = 80560840. Its totient is φ = 80524368.

The previous prime is 80542591. The next prime is 80542639. The reversal of 80542603 is 30624508.

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

It is a cyclic number.

It is not a de Polignac number, because 80542603 - 2¹⁷ = 80411531 is a prime.

It is a super-2 number, since 2×80542603² = 12974221796031218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80542703) 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, 2143 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (20140210).

Almost surely, 2^80542603 is an apocalyptic number.

80542603 is a deficient number, since it is larger than the sum of its proper divisors (18237).

80542603 is a wasteful number, since it uses less digits than its factorization.

80542603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 80542603 is about 8974.5530807946. The cubic root of 80542603 is about 431.8589127607.

The spelling of 80542603 in words is "eighty million, five hundred forty-two thousand, six hundred three".