84100051 has 8 divisors (see below), whose sum is σ = 96174080. Its totient is φ = 72040968.

The previous prime is 84100043. The next prime is 84100057. The reversal of 84100051 is 15000148.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84100051 - 2³ = 84100043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84100057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13870 + ... + 18988.

It is an arithmetic number, because the mean of its divisors is an integer number (12021760).

Almost surely, 2^84100051 is an apocalyptic number.

84100051 is a deficient number, since it is larger than the sum of its proper divisors (12074029).

84100051 is a wasteful number, since it uses less digits than its factorization.

84100051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 84100051 is about 9170.6079951113. The cubic root of 84100051 is about 438.1257240748.

Adding to 84100051 its reverse (15000148), we get a palindrome (99100199).

The spelling of 84100051 in words is "eighty-four million, one hundred thousand, fifty-one".