155534434 has 16 divisors (see below), whose sum is σ = 254723616. Its totient is φ = 70638400.

The previous prime is 155534413. The next prime is 155534461. The reversal of 155534434 is 434435551.

It is a self number, because there is not a number n which added to its sum of digits gives 155534434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34554 + ... + 38794.

It is an arithmetic number, because the mean of its divisors is an integer number (15920226).

Almost surely, 2^155534434 is an apocalyptic number.

155534434 is a deficient number, since it is larger than the sum of its proper divisors (99189182).

155534434 is a wasteful number, since it uses less digits than its factorization.

155534434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921.

The product of its digits is 72000, while the sum is 34.

The square root of 155534434 is about 12471.3445145261. The cubic root of 155534434 is about 537.7852060568.

Adding to 155534434 its reverse (434435551), we get a palindrome (589969985).

The spelling of 155534434 in words is "one hundred fifty-five million, five hundred thirty-four thousand, four hundred thirty-four".