155417427 has 32 divisors (see below), whose sum is σ = 257986560. Its totient is φ = 91640160.

The previous prime is 155417413. The next prime is 155417497. The reversal of 155417427 is 724714551.

It is not a de Polignac number, because 155417427 - 2¹⁶ = 155351891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155417391 and 155417400.

It is not an unprimeable number, because it can be changed into a prime (155417497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3918 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (8062080).

Almost surely, 2^155417427 is an apocalyptic number.

155417427 is a deficient number, since it is larger than the sum of its proper divisors (102569133).

155417427 is a wasteful number, since it uses less digits than its factorization.

155417427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14200 (or 14194 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 155417427 is about 12466.6525980313. The cubic root of 155417427 is about 537.6503154139.

It can be divided in two parts, 1554 and 17427, that added together give a palindrome (18981).

The spelling of 155417427 in words is "one hundred fifty-five million, four hundred seventeen thousand, four hundred twenty-seven".