1201522655 has 4 divisors (see below), whose sum is σ = 1441827192. Its totient is φ = 961218120.

The previous prime is 1201522631. The next prime is 1201522661. The reversal of 1201522655 is 5562251021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5562251021 = 733 ⋅7588337.

It is not a de Polignac number, because 1201522655 - 2³⁰ = 127780831 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 3 ways as a sum of consecutive naturals, for example, 120152261 + ... + 120152270.

It is an arithmetic number, because the mean of its divisors is an integer number (360456798).

Almost surely, 2^1201522655 is an apocalyptic number.

1201522655 is a deficient number, since it is larger than the sum of its proper divisors (240304537).

1201522655 is an equidigital number, since it uses as much as digits as its factorization.

1201522655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240304536.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1201522655 is about 34662.9868159107. The cubic root of 1201522655 is about 1063.1078409855.

Adding to 1201522655 its reverse (5562251021), we get a palindrome (6763773676).

The spelling of 1201522655 in words is "one billion, two hundred one million, five hundred twenty-two thousand, six hundred fifty-five".