155051434 has 4 divisors (see below), whose sum is σ = 232577154. Its totient is φ = 77525716.

The previous prime is 155051401. The next prime is 155051437. The reversal of 155051434 is 434150551.

155051434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 68840209 = 9285^2 + 8297^2 .

It is not an unprimeable number, because it can be changed into a prime (155051437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38762857 + ... + 38762860.

Almost surely, 2^155051434 is an apocalyptic number.

155051434 is a deficient number, since it is larger than the sum of its proper divisors (77525720).

155051434 is an equidigital number, since it uses as much as digits as its factorization.

155051434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77525719.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 155051434 is about 12451.9650658039. The cubic root of 155051434 is about 537.2279455396.

The spelling of 155051434 in words is "one hundred fifty-five million, fifty-one thousand, four hundred thirty-four".