20153061 has 6 divisors (see below), whose sum is σ = 29109990. Its totient is φ = 13435368.

The previous prime is 20153051. The next prime is 20153093. The reversal of 20153061 is 16035102.

It can be written as a sum of positive squares in only one way, i.e., 11189025 + 8964036 = 3345^2 + 2994^2 .

It is not a de Polignac number, because 20153061 - 2⁹ = 20152549 is a prime.

It is a super-2 number, since 2×20153061² = 812291735339442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119606 + ... + 1119623.

It is an arithmetic number, because the mean of its divisors is an integer number (4851665).

Almost surely, 2^20153061 is an apocalyptic number.

It is an amenable number.

20153061 is a deficient number, since it is larger than the sum of its proper divisors (8956929).

20153061 is a wasteful number, since it uses less digits than its factorization.

20153061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239235 (or 2239232 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20153061 is about 4489.2160785598. The cubic root of 20153061 is about 272.1324551321.

Adding to 20153061 its reverse (16035102), we get a palindrome (36188163).

The spelling of 20153061 in words is "twenty million, one hundred fifty-three thousand, sixty-one".