155220463 has 2 divisors, whose sum is σ = 155220464. Its totient is φ = 155220462.

The previous prime is 155220433. The next prime is 155220473. The reversal of 155220463 is 364022551.

It is a strong prime.

It is an emirp because it is prime and its reverse (364022551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155220463 - 2⁵ = 155220431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155220433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77610231 + 77610232.

It is an arithmetic number, because the mean of its divisors is an integer number (77610232).

Almost surely, 2^155220463 is an apocalyptic number.

155220463 is a deficient number, since it is larger than the sum of its proper divisors (1).

155220463 is an equidigital number, since it uses as much as digits as its factorization.

155220463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 155220463 is about 12458.7504590147. The cubic root of 155220463 is about 537.4230939544.

The spelling of 155220463 in words is "one hundred fifty-five million, two hundred twenty thousand, four hundred sixty-three".