155145601 has 8 divisors (see below), whose sum is σ = 168958440. Its totient is φ = 141601152.

The previous prime is 155145593. The next prime is 155145611. The reversal of 155145601 is 106541551.

It is a happy number.

155145601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6890625 + 148254976 = 2625^2 + 12176^2 .

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 155145601 - 2³ = 155145593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155145601.

It is not an unprimeable number, because it can be changed into a prime (155145611) 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, 65890 + ... + 68203.

It is an arithmetic number, because the mean of its divisors is an integer number (21119805).

Almost surely, 2^155145601 is an apocalyptic number.

It is an amenable number.

155145601 is a deficient number, since it is larger than the sum of its proper divisors (13812839).

155145601 is a wasteful number, since it uses less digits than its factorization.

155145601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134195.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 155145601 is about 12455.7457022854. The cubic root of 155145601 is about 537.3366812985.

It can be divided in two parts, 15514 and 5601, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 155145601 in words is "one hundred fifty-five million, one hundred forty-five thousand, six hundred one".