84512451 has 4 divisors (see below), whose sum is σ = 112683272. Its totient is φ = 56341632.

The previous prime is 84512429. The next prime is 84512459. The reversal of 84512451 is 15421548.

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

It is not a de Polignac number, because 84512451 - 2¹¹ = 84510403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84512459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14085406 + ... + 14085411.

It is an arithmetic number, because the mean of its divisors is an integer number (28170818).

Almost surely, 2^84512451 is an apocalyptic number.

84512451 is a deficient number, since it is larger than the sum of its proper divisors (28170821).

84512451 is a wasteful number, since it uses less digits than its factorization.

84512451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28170820.

The product of its digits is 6400, while the sum is 30.

The square root of 84512451 is about 9193.0653755970. The cubic root of 84512451 is about 438.8406999119.

Adding to 84512451 its reverse (15421548), we get a palindrome (99933999).

The spelling of 84512451 in words is "eighty-four million, five hundred twelve thousand, four hundred fifty-one".