84281261 has 4 divisors (see below), whose sum is σ = 84300000. Its totient is φ = 84262524.

The previous prime is 84281251. The next prime is 84281273. The reversal of 84281261 is 16218248.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84281261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84281251) 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, 1880 + ... + 13118.

It is an arithmetic number, because the mean of its divisors is an integer number (21075000).

Almost surely, 2^84281261 is an apocalyptic number.

It is an amenable number.

84281261 is a deficient number, since it is larger than the sum of its proper divisors (18739).

84281261 is a wasteful number, since it uses less digits than its factorization.

84281261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18738.

The product of its digits is 6144, while the sum is 32.

The square root of 84281261 is about 9180.4826125863. The cubic root of 84281261 is about 438.4401741743.

The spelling of 84281261 in words is "eighty-four million, two hundred eighty-one thousand, two hundred sixty-one".