80156801 has 6 divisors (see below), whose sum is σ = 84598002. Its totient is φ = 75937680.

The previous prime is 80156789. The next prime is 80156809. The reversal of 80156801 is 10865108.

It can be written as a sum of positive squares in only one way, i.e., 51854401 + 28302400 = 7201^2 + 5320^2 .

It is a de Polignac number, because none of the positive numbers 2^k-80156801 is a prime.

It is a super-2 number, since 2×80156801² = 12850225493107202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80156809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110660 + ... + 111381.

It is an arithmetic number, because the mean of its divisors is an integer number (14099667).

Almost surely, 2^80156801 is an apocalyptic number.

It is an amenable number.

80156801 is a deficient number, since it is larger than the sum of its proper divisors (4441201).

80156801 is a wasteful number, since it uses less digits than its factorization.

80156801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222079 (or 222060 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 80156801 is about 8953.0330614826. The cubic root of 80156801 is about 431.1682688772.

The spelling of 80156801 in words is "eighty million, one hundred fifty-six thousand, eight hundred one".