120551687 has 2 divisors, whose sum is σ = 120551688. Its totient is φ = 120551686.

The previous prime is 120551659. The next prime is 120551701. The reversal of 120551687 is 786155021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120551687 - 2⁶ = 120551623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120551647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60275843 + 60275844.

It is an arithmetic number, because the mean of its divisors is an integer number (60275844).

Almost surely, 2^120551687 is an apocalyptic number.

120551687 is a deficient number, since it is larger than the sum of its proper divisors (1).

120551687 is an equidigital number, since it uses as much as digits as its factorization.

120551687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 120551687 is about 10979.6032259823. The cubic root of 120551687 is about 493.9971356519.

The spelling of 120551687 in words is "one hundred twenty million, five hundred fifty-one thousand, six hundred eighty-seven".