121555463 has 2 divisors, whose sum is σ = 121555464. Its totient is φ = 121555462.

The previous prime is 121555429. The next prime is 121555513. The reversal of 121555463 is 364555121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121555463 - 2¹⁴ = 121539079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121555403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60777731 + 60777732.

It is an arithmetic number, because the mean of its divisors is an integer number (60777732).

Almost surely, 2^121555463 is an apocalyptic number.

121555463 is a deficient number, since it is larger than the sum of its proper divisors (1).

121555463 is an equidigital number, since it uses as much as digits as its factorization.

121555463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 121555463 is about 11025.2194082476. The cubic root of 121555463 is about 495.3644399811.

The spelling of 121555463 in words is "one hundred twenty-one million, five hundred fifty-five thousand, four hundred sixty-three".