155329478 has 12 divisors (see below), whose sum is σ = 239465772. Its totient is φ = 75564360.

The previous prime is 155329463. The next prime is 155329487. The reversal of 155329478 is 874923551.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 25628 + ... + 31103.

It is an arithmetic number, because the mean of its divisors is an integer number (19955481).

Almost surely, 2^155329478 is an apocalyptic number.

155329478 is a deficient number, since it is larger than the sum of its proper divisors (84136294).

155329478 is an equidigital number, since it uses as much as digits as its factorization.

155329478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56807 (or 56770 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 155329478 is about 12463.1247285743. The cubic root of 155329478 is about 537.5488794921.

The spelling of 155329478 in words is "one hundred fifty-five million, three hundred twenty-nine thousand, four hundred seventy-eight".