655211401 has 8 divisors (see below), whose sum is σ = 706104000. Its totient is φ = 604389072.

The previous prime is 655211393. The next prime is 655211407. The reversal of 655211401 is 104112556.

It is a happy number.

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 655211401 - 2³ = 655211393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655211407) 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, 2676 + ... + 36298.

It is an arithmetic number, because the mean of its divisors is an integer number (88263000).

Almost surely, 2^655211401 is an apocalyptic number.

It is an amenable number.

655211401 is a deficient number, since it is larger than the sum of its proper divisors (50892599).

655211401 is a wasteful number, since it uses less digits than its factorization.

655211401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35135.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 655211401 is about 25597.0975112414. The cubic root of 655211401 is about 868.5479813478.

Adding to 655211401 its reverse (104112556), we get a palindrome (759323957).

The spelling of 655211401 in words is "six hundred fifty-five million, two hundred eleven thousand, four hundred one".