1201550455 has 8 divisors (see below), whose sum is σ = 1647840672. Its totient is φ = 823920288.

The previous prime is 1201550447. The next prime is 1201550461. The reversal of 1201550455 is 5540551021.

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 1201550455 - 2³ = 1201550447 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, 17164972 + ... + 17165041.

It is an arithmetic number, because the mean of its divisors is an integer number (205980084).

Almost surely, 2^1201550455 is an apocalyptic number.

1201550455 is a deficient number, since it is larger than the sum of its proper divisors (446290217).

1201550455 is an equidigital number, since it uses as much as digits as its factorization.

1201550455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34330025.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1201550455 is about 34663.3878176961. The cubic root of 1201550455 is about 1063.1160400735.

The spelling of 1201550455 in words is "one billion, two hundred one million, five hundred fifty thousand, four hundred fifty-five".