80783955 has 48 divisors (see below), whose sum is σ = 160714944. Its totient is φ = 36771840.

The previous prime is 80783951. The next prime is 80783957. The reversal of 80783955 is 55938708.

It is not a de Polignac number, because 80783955 - 2² = 80783951 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80783955.

It is not an unprimeable number, because it can be changed into a prime (80783951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105775 + ... + 106535.

It is an arithmetic number, because the mean of its divisors is an integer number (3348228).

Almost surely, 2^80783955 is an apocalyptic number.

80783955 is a deficient number, since it is larger than the sum of its proper divisors (79930989).

80783955 is a wasteful number, since it uses less digits than its factorization.

80783955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 80783955 is about 8987.9894859752. The cubic root of 80783955 is about 432.2898485651.

The spelling of 80783955 in words is "eighty million, seven hundred eighty-three thousand, nine hundred fifty-five".