135861003 has 64 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 82425600.

The previous prime is 135860981. The next prime is 135861071. The reversal of 135861003 is 300168531.

It is not a de Polignac number, because 135861003 - 2¹³ = 135852811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (135861403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1269676 + ... + 1269782.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^135861003 is an apocalyptic number.

135861003 is a deficient number, since it is larger than the sum of its proper divisors (84770037).

135861003 is a wasteful number, since it uses less digits than its factorization.

135861003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 135861003 is about 11655.9428190087. The cubic root of 135861003 is about 514.0810621242.

The spelling of 135861003 in words is "one hundred thirty-five million, eight hundred sixty-one thousand, three".