155513001541 has 4 divisors (see below), whose sum is σ = 155690326252. Its totient is φ = 155335676832.

The previous prime is 155513001529. The next prime is 155513001563. The reversal of 155513001541 is 145100315551.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71960208516 + 83552793025 = 268254^2 + 289055^2 .

It is a cyclic number.

It is not a de Polignac number, because 155513001541 - 2²⁹ = 154976130629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155513001571) 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, 88661040 + ... + 88662793.

It is an arithmetic number, because the mean of its divisors is an integer number (38922581563).

Almost surely, 2^155513001541 is an apocalyptic number.

It is an amenable number.

155513001541 is a deficient number, since it is larger than the sum of its proper divisors (177324711).

155513001541 is an equidigital number, since it uses as much as digits as its factorization.

155513001541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177324710.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 155513001541 in words is "one hundred fifty-five billion, five hundred thirteen million, one thousand, five hundred forty-one".