621181141 has 4 divisors (see below), whose sum is σ = 709921312. Its totient is φ = 532440972.

The previous prime is 621181111. The next prime is 621181151. The reversal of 621181141 is 141181126.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 621181141 - 2¹³ = 621172949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621181111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44370075 + ... + 44370088.

It is an arithmetic number, because the mean of its divisors is an integer number (177480328).

Almost surely, 2^621181141 is an apocalyptic number.

It is an amenable number.

621181141 is a deficient number, since it is larger than the sum of its proper divisors (88740171).

621181141 is an equidigital number, since it uses as much as digits as its factorization.

621181141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88740170.

The product of its digits is 384, while the sum is 25.

The square root of 621181141 is about 24923.5057927251. The cubic root of 621181141 is about 853.2430393386.

The spelling of 621181141 in words is "six hundred twenty-one million, one hundred eighty-one thousand, one hundred forty-one".