20152061 has 4 divisors (see below), whose sum is σ = 20162112. Its totient is φ = 20142012.

The previous prime is 20152051. The next prime is 20152063. The reversal of 20152061 is 16025102.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16025102 = 2 ⋅8012551.

It is a cyclic number.

It is not a de Polignac number, because 20152061 - 2²² = 15957757 is a prime.

It is a super-2 number, since 2×20152061² = 812211125095442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152063) 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, 875 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (5040528).

Almost surely, 2^20152061 is an apocalyptic number.

It is an amenable number.

20152061 is a deficient number, since it is larger than the sum of its proper divisors (10051).

20152061 is an equidigital number, since it uses as much as digits as its factorization.

20152061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20152061 is about 4489.1046991577. The cubic root of 20152061 is about 272.1279539638.

Adding to 20152061 its reverse (16025102), we get a palindrome (36177163).

The spelling of 20152061 in words is "twenty million, one hundred fifty-two thousand, sixty-one".