84515953 has 2 divisors, whose sum is σ = 84515954. Its totient is φ = 84515952.

The previous prime is 84515939. The next prime is 84515987. The reversal of 84515953 is 35951548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 4359744 = 8953^2 + 2088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84515953 is a prime.

It is a super-2 number, since 2×84515953² = 14285892622996418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84515923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42257976 + 42257977.

It is an arithmetic number, because the mean of its divisors is an integer number (42257977).

Almost surely, 2^84515953 is an apocalyptic number.

It is an amenable number.

84515953 is a deficient number, since it is larger than the sum of its proper divisors (1).

84515953 is an equidigital number, since it uses as much as digits as its factorization.

84515953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The square root of 84515953 is about 9193.2558432799. The cubic root of 84515953 is about 438.8467613419.

The spelling of 84515953 in words is "eighty-four million, five hundred fifteen thousand, nine hundred fifty-three".