73166531 has 2 divisors, whose sum is σ = 73166532. Its totient is φ = 73166530.

The previous prime is 73166461. The next prime is 73166539. The reversal of 73166531 is 13566137.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73166531 is a prime.

It is a super-2 number, since 2×73166531² = 10706682517147922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73166539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36583265 + 36583266.

It is an arithmetic number, because the mean of its divisors is an integer number (36583266).

Almost surely, 2^73166531 is an apocalyptic number.

73166531 is a deficient number, since it is larger than the sum of its proper divisors (1).

73166531 is an equidigital number, since it uses as much as digits as its factorization.

73166531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 73166531 is about 8553.7436833237. The cubic root of 73166531 is about 418.2514817222.

The spelling of 73166531 in words is "seventy-three million, one hundred sixty-six thousand, five hundred thirty-one".