83052421 has 4 divisors (see below), whose sum is σ = 83090700. Its totient is φ = 83014144.

The previous prime is 83052391. The next prime is 83052427. The reversal of 83052421 is 12425038.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73719396 + 9333025 = 8586^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 83052421 - 2⁹ = 83051909 is a prime.

It is a super-2 number, since 2×83052421² = 13795409267922482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83052427) 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, 15676 + ... + 20293.

It is an arithmetic number, because the mean of its divisors is an integer number (20772675).

Almost surely, 2^83052421 is an apocalyptic number.

It is an amenable number.

83052421 is a deficient number, since it is larger than the sum of its proper divisors (38279).

83052421 is a wasteful number, since it uses less digits than its factorization.

83052421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38278.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 83052421 is about 9113.3101011652. The cubic root of 83052421 is about 436.2988807936.

Adding to 83052421 its reverse (12425038), we get a palindrome (95477459).

The spelling of 83052421 in words is "eighty-three million, fifty-two thousand, four hundred twenty-one".