155474563 has 2 divisors, whose sum is σ = 155474564. Its totient is φ = 155474562.

The previous prime is 155474551. The next prime is 155474603. The reversal of 155474563 is 365474551.

It is an a-pointer prime, because the next prime (155474603) can be obtained adding 155474563 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155474563 - 2¹⁷ = 155343491 is a prime.

It is equal to p_8734684 and since 155474563 and 8734684 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (155474513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77737281 + 77737282.

It is an arithmetic number, because the mean of its divisors is an integer number (77737282).

Almost surely, 2^155474563 is an apocalyptic number.

155474563 is a deficient number, since it is larger than the sum of its proper divisors (1).

155474563 is an equidigital number, since it uses as much as digits as its factorization.

155474563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 40.

The square root of 155474563 is about 12468.9439408476. The cubic root of 155474563 is about 537.7161926782.

The spelling of 155474563 in words is "one hundred fifty-five million, four hundred seventy-four thousand, five hundred sixty-three".