120533551 has 2 divisors, whose sum is σ = 120533552. Its totient is φ = 120533550.

The previous prime is 120533533. The next prime is 120533557. The reversal of 120533551 is 155335021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120533551 - 2⁷ = 120533423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120533557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60266775 + 60266776.

It is an arithmetic number, because the mean of its divisors is an integer number (60266776).

Almost surely, 2^120533551 is an apocalyptic number.

120533551 is a deficient number, since it is larger than the sum of its proper divisors (1).

120533551 is an equidigital number, since it uses as much as digits as its factorization.

120533551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 120533551 is about 10978.7772998636. Note that the first 3 decimals coincide. The cubic root of 120533551 is about 493.9723618209.

Adding to 120533551 its reverse (155335021), we get a palindrome (275868572).

The spelling of 120533551 in words is "one hundred twenty million, five hundred thirty-three thousand, five hundred fifty-one".