155345546 has 4 divisors (see below), whose sum is σ = 233018322. Its totient is φ = 77672772.

The previous prime is 155345543. The next prime is 155345551. The reversal of 155345546 is 645543551.

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., 150675625 + 4669921 = 12275^2 + 2161^2 .

It is not an unprimeable number, because it can be changed into a prime (155345543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38836385 + ... + 38836388.

Almost surely, 2^155345546 is an apocalyptic number.

155345546 is a deficient number, since it is larger than the sum of its proper divisors (77672776).

155345546 is an equidigital number, since it uses as much as digits as its factorization.

155345546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77672775.

The product of its digits is 180000, while the sum is 38.

The square root of 155345546 is about 12463.7693335524. The cubic root of 155345546 is about 537.5674143675.

The spelling of 155345546 in words is "one hundred fifty-five million, three hundred forty-five thousand, five hundred forty-six".