20273501 has 2 divisors, whose sum is σ = 20273502. Its totient is φ = 20273500.

The previous prime is 20273479. The next prime is 20273527. The reversal of 20273501 is 10537202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11062276 + 9211225 = 3326^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 20273501 - 2¹⁴ = 20257117 is a prime.

It is a super-2 number, since 2×20273501² = 822029685594002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20243501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136750 + 10136751.

It is an arithmetic number, because the mean of its divisors is an integer number (10136751).

Almost surely, 2^20273501 is an apocalyptic number.

It is an amenable number.

20273501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20273501 is an equidigital number, since it uses as much as digits as its factorization.

20273501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20273501 is about 4502.6104650525. The cubic root of 20273501 is about 272.6734905092.

The spelling of 20273501 in words is "twenty million, two hundred seventy-three thousand, five hundred one".