155115401 has 8 divisors (see below), whose sum is σ = 177411840. Its totient is φ = 132853248.

The previous prime is 155115379. The next prime is 155115409. The reversal of 155115401 is 104511551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155115401 - 2²² = 150921097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155115409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 17726.

It is an arithmetic number, because the mean of its divisors is an integer number (22176480).

Almost surely, 2^155115401 is an apocalyptic number.

It is an amenable number.

155115401 is a deficient number, since it is larger than the sum of its proper divisors (22296439).

155115401 is a wasteful number, since it uses less digits than its factorization.

155115401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 155115401 is about 12454.5333513544. The cubic root of 155115401 is about 537.3018137918.

Adding to 155115401 its reverse (104511551), we get a palindrome (259626952).

The spelling of 155115401 in words is "one hundred fifty-five million, one hundred fifteen thousand, four hundred one".