2021325157 has 4 divisors (see below), whose sum is σ = 2023178976. Its totient is φ = 2019471340.

The previous prime is 2021325151. The next prime is 2021325179. The reversal of 2021325157 is 7515231202.

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 a cyclic number.

It is not a de Polignac number, because 2021325157 - 2³ = 2021325149 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 (2021325151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925273 + ... + 927454.

It is an arithmetic number, because the mean of its divisors is an integer number (505794744).

Almost surely, 2^2021325157 is an apocalyptic number.

It is an amenable number.

2021325157 is a deficient number, since it is larger than the sum of its proper divisors (1853819).

2021325157 is a wasteful number, since it uses less digits than its factorization.

2021325157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853818.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2021325157 is about 44959.1498696317. The cubic root of 2021325157 is about 1264.3832301911.

Adding to 2021325157 its reverse (7515231202), we get a palindrome (9536556359).

The spelling of 2021325157 in words is "two billion, twenty-one million, three hundred twenty-five thousand, one hundred fifty-seven".