40533121 has 2 divisors, whose sum is σ = 40533122. Its totient is φ = 40533120.

The previous prime is 40533091. The next prime is 40533131. The reversal of 40533121 is 12133504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 83521 = 6360^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 40533121 - 2⁷ = 40532993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40533131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20266560 + 20266561.

It is an arithmetic number, because the mean of its divisors is an integer number (20266561).

Almost surely, 2^40533121 is an apocalyptic number.

It is an amenable number.

40533121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40533121 is an equidigital number, since it uses as much as digits as its factorization.

40533121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40533121 is about 6366.5627303907. The cubic root of 40533121 is about 343.5078622715.

Adding to 40533121 its reverse (12133504), we get a palindrome (52666625).

The spelling of 40533121 in words is "forty million, five hundred thirty-three thousand, one hundred twenty-one".