155538045 has 48 divisors (see below), whose sum is σ = 293437872. Its totient is φ = 75755520.

The previous prime is 155538013. The next prime is 155538073. The reversal of 155538045 is 540835551.

It is a happy number.

155538045 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 8 ways, for example, as 23242041 + 132296004 = 4821^2 + 11502^2 .

It is not a de Polignac number, because 155538045 - 2⁵ = 155538013 is a prime.

It is a super-3 number, since 3×155538045³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55375 + ... + 58115.

It is an arithmetic number, because the mean of its divisors is an integer number (6113289).

Almost surely, 2^155538045 is an apocalyptic number.

155538045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155538045 is a deficient number, since it is larger than the sum of its proper divisors (137899827).

155538045 is a wasteful number, since it uses less digits than its factorization.

155538045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2859 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 155538045 is about 12471.4892855665. The cubic root of 155538045 is about 537.7893678948.

The spelling of 155538045 in words is "one hundred fifty-five million, five hundred thirty-eight thousand, forty-five".