120553487 has 2 divisors, whose sum is σ = 120553488. Its totient is φ = 120553486.

The previous prime is 120553481. The next prime is 120553523. The reversal of 120553487 is 784355021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120553487 - 2⁴ = 120553471 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120553481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60276743 + 60276744.

It is an arithmetic number, because the mean of its divisors is an integer number (60276744).

Almost surely, 2^120553487 is an apocalyptic number.

120553487 is a deficient number, since it is larger than the sum of its proper divisors (1).

120553487 is an equidigital number, since it uses as much as digits as its factorization.

120553487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 120553487 is about 10979.6851958515. The cubic root of 120553487 is about 493.9995943218. Note that the first 3 decimals are identical.

The spelling of 120553487 in words is "one hundred twenty million, five hundred fifty-three thousand, four hundred eighty-seven".