80415251 has 4 divisors (see below), whose sum is σ = 91903152. Its totient is φ = 68927352.

The previous prime is 80415241. The next prime is 80415281. The reversal of 80415251 is 15251408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80415251 - 2¹⁴ = 80398867 is a prime.

It is a super-2 number, since 2×80415251² = 12933225186786002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80415251.

It is not an unprimeable number, because it can be changed into a prime (80415211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5743940 + ... + 5743953.

It is an arithmetic number, because the mean of its divisors is an integer number (22975788).

Almost surely, 2^80415251 is an apocalyptic number.

80415251 is a deficient number, since it is larger than the sum of its proper divisors (11487901).

80415251 is a wasteful number, since it uses less digits than its factorization.

80415251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11487900.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 80415251 is about 8967.4551016439. The cubic root of 80415251 is about 431.6311777612.

Adding to 80415251 its reverse (15251408), we get a palindrome (95666659).

The spelling of 80415251 in words is "eighty million, four hundred fifteen thousand, two hundred fifty-one".