135283621 has 8 divisors (see below), whose sum is σ = 147672288. Its totient is φ = 122910000.

The previous prime is 135283607. The next prime is 135283627. The reversal of 135283621 is 126382531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135283621 - 2¹⁵ = 135250853 is a prime.

It is a super-2 number, since 2×135283621² = 36603316221743282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135283627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23971 + ... + 29071.

It is an arithmetic number, because the mean of its divisors is an integer number (18459036).

Almost surely, 2^135283621 is an apocalyptic number.

135283621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135283621 is a deficient number, since it is larger than the sum of its proper divisors (12388667).

135283621 is a wasteful number, since it uses less digits than its factorization.

135283621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523.

The product of its digits is 8640, while the sum is 31.

The square root of 135283621 is about 11631.1487394840. The cubic root of 135283621 is about 513.3517809285.

The spelling of 135283621 in words is "one hundred thirty-five million, two hundred eighty-three thousand, six hundred twenty-one".