155542115 has 8 divisors (see below), whose sum is σ = 186780768. Its totient is φ = 124346880.

The previous prime is 155542111. The next prime is 155542133. The reversal of 155542115 is 511245551.

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

It is not a de Polignac number, because 155542115 - 2² = 155542111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155542111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366 + ... + 17795.

It is an arithmetic number, because the mean of its divisors is an integer number (23347596).

Almost surely, 2^155542115 is an apocalyptic number.

155542115 is a deficient number, since it is larger than the sum of its proper divisors (31238653).

155542115 is a wasteful number, since it uses less digits than its factorization.

155542115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21709.

The product of its digits is 5000, while the sum is 29.

The square root of 155542115 is about 12471.6524566715. The cubic root of 155542115 is about 537.7940586735.

Adding to 155542115 its reverse (511245551), we get a palindrome (666787666).

The spelling of 155542115 in words is "one hundred fifty-five million, five hundred forty-two thousand, one hundred fifteen".