120545531 has 2 divisors, whose sum is σ = 120545532. Its totient is φ = 120545530.

The previous prime is 120545527. The next prime is 120545533. The reversal of 120545531 is 135545021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120545531 - 2² = 120545527 is a prime.

It is a super-2 number, since 2×120545531² = 29062450088143922, which contains 22 as substring.

Together with 120545533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120545531.

It is not a weakly prime, because it can be changed into another prime (120545533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60272765 + 60272766.

It is an arithmetic number, because the mean of its divisors is an integer number (60272766).

Almost surely, 2^120545531 is an apocalyptic number.

120545531 is a deficient number, since it is larger than the sum of its proper divisors (1).

120545531 is an equidigital number, since it uses as much as digits as its factorization.

120545531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 120545531 is about 10979.3228844041. The cubic root of 120545531 is about 493.9887268158.

The spelling of 120545531 in words is "one hundred twenty million, five hundred forty-five thousand, five hundred thirty-one".