11620553 has 8 divisors (see below), whose sum is σ = 13639872. Its totient is φ = 9691056.

The previous prime is 11620549. The next prime is 11620559. The reversal of 11620553 is 35502611.

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 11620553 - 2² = 11620549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11620559) 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, 22175 + ... + 22692.

It is an arithmetic number, because the mean of its divisors is an integer number (1704984).

Almost surely, 2^11620553 is an apocalyptic number.

It is an amenable number.

11620553 is a deficient number, since it is larger than the sum of its proper divisors (2019319).

11620553 is an equidigital number, since it uses as much as digits as its factorization.

11620553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44911.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 11620553 is about 3408.8932221470. The cubic root of 11620553 is about 226.5038553533.

The spelling of 11620553 in words is "eleven million, six hundred twenty thousand, five hundred fifty-three".