241857881 has 2 divisors, whose sum is σ = 241857882. Its totient is φ = 241857880.

The previous prime is 241857871. The next prime is 241857887. The reversal of 241857881 is 188758142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180768025 + 61089856 = 13445^2 + 7816^2 .

It is a cyclic number.

It is not a de Polignac number, because 241857881 - 2²⁶ = 174749017 is a prime.

It is a super-2 number, since 2×241857881² = 116990469203620322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (241857887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120928940 + 120928941.

It is an arithmetic number, because the mean of its divisors is an integer number (120928941).

Almost surely, 2^241857881 is an apocalyptic number.

It is an amenable number.

241857881 is a deficient number, since it is larger than the sum of its proper divisors (1).

241857881 is an equidigital number, since it uses as much as digits as its factorization.

241857881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 44.

The square root of 241857881 is about 15551.7806375990. The cubic root of 241857881 is about 623.0459555566.

The spelling of 241857881 in words is "two hundred forty-one million, eight hundred fifty-seven thousand, eight hundred eighty-one".