84260251 has 4 divisors (see below), whose sum is σ = 84280504. Its totient is φ = 84240000.

The previous prime is 84260243. The next prime is 84260261. The reversal of 84260251 is 15206248.

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 84260251 - 2³ = 84260243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84260221) 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, 1350 + ... + 13051.

It is an arithmetic number, because the mean of its divisors is an integer number (21070126).

Almost surely, 2^84260251 is an apocalyptic number.

84260251 is a deficient number, since it is larger than the sum of its proper divisors (20253).

84260251 is a wasteful number, since it uses less digits than its factorization.

84260251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20252.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 84260251 is about 9179.3382659100. The cubic root of 84260251 is about 438.4037390542.

Adding to 84260251 its reverse (15206248), we get a palindrome (99466499).

The spelling of 84260251 in words is "eighty-four million, two hundred sixty thousand, two hundred fifty-one".