39501481 has 2 divisors, whose sum is σ = 39501482. Its totient is φ = 39501480.

The previous prime is 39501467. The next prime is 39501487. The reversal of 39501481 is 18410593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 256 = 6285^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 39501481 - 2²¹ = 37404329 is a prime.

It is a super-2 number, since 2×39501481² = 3120734002386722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39501487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19750740 + 19750741.

It is an arithmetic number, because the mean of its divisors is an integer number (19750741).

Almost surely, 2^39501481 is an apocalyptic number.

It is an amenable number.

39501481 is a deficient number, since it is larger than the sum of its proper divisors (1).

39501481 is an equidigital number, since it uses as much as digits as its factorization.

39501481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 39501481 is about 6285.0203659177. The cubic root of 39501481 is about 340.5684866656.

It can be divided in two parts, 39501 and 481, that multiplied together give a palindrome (18999981).

The spelling of 39501481 in words is "thirty-nine million, five hundred one thousand, four hundred eighty-one".