20135455 has 8 divisors (see below), whose sum is σ = 24230592. Its totient is φ = 16063008.

The previous prime is 20135447. The next prime is 20135501. The reversal of 20135455 is 55453102.

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 20135455 - 2³ = 20135447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3652 + ... + 7321.

It is an arithmetic number, because the mean of its divisors is an integer number (3028824).

Almost surely, 2^20135455 is an apocalyptic number.

20135455 is a deficient number, since it is larger than the sum of its proper divisors (4095137).

20135455 is a wasteful number, since it uses less digits than its factorization.

20135455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 20135455 is about 4487.2547286732. The cubic root of 20135455 is about 272.0531857862.

Adding to 20135455 its reverse (55453102), we get a palindrome (75588557).

The spelling of 20135455 in words is "twenty million, one hundred thirty-five thousand, four hundred fifty-five".