921655241 has 16 divisors (see below), whose sum is σ = 1041030144. Its totient is φ = 809586624.

The previous prime is 921655223. The next prime is 921655291. The reversal of 921655241 is 142556129.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 921655241 - 2¹⁴ = 921638857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921655291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51080 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (65064384).

Almost surely, 2^921655241 is an apocalyptic number.

It is an amenable number.

921655241 is a deficient number, since it is larger than the sum of its proper divisors (119374903).

921655241 is a wasteful number, since it uses less digits than its factorization.

921655241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15880.

The product of its digits is 21600, while the sum is 35.

The square root of 921655241 is about 30358.7753540883. The cubic root of 921655241 is about 973.1717625908.

The spelling of 921655241 in words is "nine hundred twenty-one million, six hundred fifty-five thousand, two hundred forty-one".