83437121 has 2 divisors, whose sum is σ = 83437122. Its totient is φ = 83437120.

The previous prime is 83437117. The next prime is 83437127. The reversal of 83437121 is 12173438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 28143025 = 7436^2 + 5305^2 .

It is a cyclic number.

It is not a de Polignac number, because 83437121 - 2² = 83437117 is a prime.

It is not a weakly prime, because it can be changed into another prime (83437127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41718560 + 41718561.

It is an arithmetic number, because the mean of its divisors is an integer number (41718561).

Almost surely, 2^83437121 is an apocalyptic number.

It is an amenable number.

83437121 is a deficient number, since it is larger than the sum of its proper divisors (1).

83437121 is an equidigital number, since it uses as much as digits as its factorization.

83437121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 83437121 is about 9134.3922074761. The cubic root of 83437121 is about 436.9714908955.

The spelling of 83437121 in words is "eighty-three million, four hundred thirty-seven thousand, one hundred twenty-one".