2021523151 has 2 divisors, whose sum is σ = 2021523152. Its totient is φ = 2021523150.

The previous prime is 2021523139. The next prime is 2021523167. The reversal of 2021523151 is 1513251202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021523151 - 2²¹ = 2019425999 is a prime.

It is a super-3 number, since 3×2021523151³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021523451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010761575 + 1010761576.

It is an arithmetic number, because the mean of its divisors is an integer number (1010761576).

Almost surely, 2^2021523151 is an apocalyptic number.

2021523151 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021523151 is an equidigital number, since it uses as much as digits as its factorization.

2021523151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2021523151 is about 44961.3517479179. The cubic root of 2021523151 is about 1264.4245120401.

Adding to 2021523151 its reverse (1513251202), we get a palindrome (3534774353).

The spelling of 2021523151 in words is "two billion, twenty-one million, five hundred twenty-three thousand, one hundred fifty-one".