155476047 has 24 divisors (see below), whose sum is σ = 219380400. Its totient is φ = 97826176.

The previous prime is 155476043. The next prime is 155476049. The reversal of 155476047 is 740674551.

It is not a de Polignac number, because 155476047 - 2² = 155476043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155475996 and 155476014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155476043) 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 in 23 ways as a sum of consecutive naturals, for example, 191779 + ... + 192587.

It is an arithmetic number, because the mean of its divisors is an integer number (9140850).

Almost surely, 2^155476047 is an apocalyptic number.

155476047 is a deficient number, since it is larger than the sum of its proper divisors (63904353).

155476047 is an equidigital number, since it uses as much as digits as its factorization.

155476047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 155476047 is about 12469.0034485519. The cubic root of 155476047 is about 537.7179035010.

The spelling of 155476047 in words is "one hundred fifty-five million, four hundred seventy-six thousand, forty-seven".