120375581 has 2 divisors, whose sum is σ = 120375582. Its totient is φ = 120375580.

The previous prime is 120375559. The next prime is 120375587. The reversal of 120375581 is 185573021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101808100 + 18567481 = 10090^2 + 4309^2 .

It is an emirp because it is prime and its reverse (185573021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120375581 is a prime.

It is a super-2 number, since 2×120375581² = 28980561002175122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120375587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60187790 + 60187791.

It is an arithmetic number, because the mean of its divisors is an integer number (60187791).

Almost surely, 2^120375581 is an apocalyptic number.

It is an amenable number.

120375581 is a deficient number, since it is larger than the sum of its proper divisors (1).

120375581 is an equidigital number, since it uses as much as digits as its factorization.

120375581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 120375581 is about 10971.5806062755. The cubic root of 120375581 is about 493.7564691563.

The spelling of 120375581 in words is "one hundred twenty million, three hundred seventy-five thousand, five hundred eighty-one".