801551741 has 2 divisors, whose sum is σ = 801551742. Its totient is φ = 801551740.

The previous prime is 801551693. The next prime is 801551743. The reversal of 801551741 is 147155108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416568100 + 384983641 = 20410^2 + 19621^2 .

It is a cyclic number.

It is not a de Polignac number, because 801551741 - 2¹⁸ = 801289597 is a prime.

Together with 801551743, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 801551698 and 801551707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801551743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400775870 + 400775871.

It is an arithmetic number, because the mean of its divisors is an integer number (400775871).

Almost surely, 2^801551741 is an apocalyptic number.

It is an amenable number.

801551741 is a deficient number, since it is larger than the sum of its proper divisors (1).

801551741 is an equidigital number, since it uses as much as digits as its factorization.

801551741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 801551741 is about 28311.6891230460. The cubic root of 801551741 is about 928.9175910428.

The spelling of 801551741 in words is "eight hundred one million, five hundred fifty-one thousand, seven hundred forty-one".