135641572 has 36 divisors (see below), whose sum is σ = 275106384. Its totient is φ = 58023040.

The previous prime is 135641549. The next prime is 135641633. The reversal of 135641572 is 275146531.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7383 + ... + 18049.

It is an arithmetic number, because the mean of its divisors is an integer number (7641844).

Almost surely, 2^135641572 is an apocalyptic number.

It is an amenable number.

135641572 is an abundant number, since it is smaller than the sum of its proper divisors (139464812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135641572 is a wasteful number, since it uses less digits than its factorization.

135641572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10716 (or 10697 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 135641572 is about 11646.5261773629. The cubic root of 135641572 is about 513.8041464904.

The spelling of 135641572 in words is "one hundred thirty-five million, six hundred forty-one thousand, five hundred seventy-two".