80857451 has 2 divisors, whose sum is σ = 80857452. Its totient is φ = 80857450.

The previous prime is 80857417. The next prime is 80857459. The reversal of 80857451 is 15475808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80857451 - 2¹⁰ = 80856427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80857459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40428725 + 40428726.

It is an arithmetic number, because the mean of its divisors is an integer number (40428726).

Almost surely, 2^80857451 is an apocalyptic number.

80857451 is a deficient number, since it is larger than the sum of its proper divisors (1).

80857451 is an equidigital number, since it uses as much as digits as its factorization.

80857451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 80857451 is about 8992.0771237796. The cubic root of 80857451 is about 432.4209057141.

The spelling of 80857451 in words is "eighty million, eight hundred fifty-seven thousand, four hundred fifty-one".