79451 has 2 divisors, whose sum is σ = 79452. Its totient is φ = 79450.

The previous prime is 79433. The next prime is 79481. The reversal of 79451 is 15497.

It is a weak prime.

It is an emirp because it is prime and its reverse (15497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79451 - 2¹⁰ = 78427 is a prime.

It is a super-2 number, since 2×79451² = 12624922802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79451.

It is not a weakly prime, because it can be changed into another prime (79411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39725 + 39726.

It is an arithmetic number, because the mean of its divisors is an integer number (39726).

2⁷⁹⁴⁵¹ is an apocalyptic number.

79451 is a deficient number, since it is larger than the sum of its proper divisors (1).

79451 is an equidigital number, since it uses as much as digits as its factorization.

79451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 79451 is about 281.8705376587. The cubic root of 79451 is about 42.9899020817.

The spelling of 79451 in words is "seventy-nine thousand, four hundred fifty-one".