155332061 has 4 divisors (see below), whose sum is σ = 155357724. Its totient is φ = 155306400.

The previous prime is 155332057. The next prime is 155332069. The reversal of 155332061 is 160233551.

155332061 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 160233551 = 17 ⋅9425503.

It can be written as a sum of positive squares in 2 ways, for example, as 112232836 + 43099225 = 10594^2 + 6565^2 .

It is a cyclic number.

It is not a de Polignac number, because 155332061 - 2² = 155332057 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 155332061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155332069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (38839431).

Almost surely, 2^155332061 is an apocalyptic number.

It is an amenable number.

155332061 is a deficient number, since it is larger than the sum of its proper divisors (25663).

155332061 is an equidigital number, since it uses as much as digits as its factorization.

155332061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25662.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 155332061 is about 12463.2283538416. The cubic root of 155332061 is about 537.5518591391.

The spelling of 155332061 in words is "one hundred fifty-five million, three hundred thirty-two thousand, sixty-one".