135220501 has 16 divisors (see below), whose sum is σ = 150631488. Its totient is φ = 120585600.

The previous prime is 135220493. The next prime is 135220531. The reversal of 135220501 is 105022531.

135220501 = T₄₂₉ + T₄₃₀ + ... + T₉₆₁.

It is a cyclic number.

It is not a de Polignac number, because 135220501 - 2³ = 135220493 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 (135220531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55846 + ... + 58216.

It is an arithmetic number, because the mean of its divisors is an integer number (9414468).

Almost surely, 2^135220501 is an apocalyptic number.

It is an amenable number.

135220501 is a deficient number, since it is larger than the sum of its proper divisors (15410987).

135220501 is a wasteful number, since it uses less digits than its factorization.

135220501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 135220501 is about 11628.4350193824. The cubic root of 135220501 is about 513.2719294162.

The spelling of 135220501 in words is "one hundred thirty-five million, two hundred twenty thousand, five hundred one".