80216556 has 48 divisors (see below), whose sum is σ = 225173760. Its totient is φ = 21712320.

The previous prime is 80216551. The next prime is 80216573. The reversal of 80216556 is 65561208.

It is a super-2 number, since 2×80216556² = 12869391713002272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80216551) 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, 23535 + ... + 26726.

It is an arithmetic number, because the mean of its divisors is an integer number (4691120).

Almost surely, 2^80216556 is an apocalyptic number.

It is an amenable number.

80216556 is an abundant number, since it is smaller than the sum of its proper divisors (144957204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80216556 is a wasteful number, since it uses less digits than its factorization.

80216556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50294 (or 50292 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 80216556 is about 8956.3695770105. The cubic root of 80216556 is about 431.2753841811.

The spelling of 80216556 in words is "eighty million, two hundred sixteen thousand, five hundred fifty-six".