405026101 has 2 divisors, whose sum is σ = 405026102. Its totient is φ = 405026100.

The previous prime is 405026051. The next prime is 405026107. The reversal of 405026101 is 101620504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397045476 + 7980625 = 19926^2 + 2825^2 .

It is a cyclic number.

It is not a de Polignac number, because 405026101 - 2¹⁹ = 404501813 is a prime.

It is a super-2 number, since 2×405026101² = 328092284982524402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405026107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202513050 + 202513051.

It is an arithmetic number, because the mean of its divisors is an integer number (202513051).

Almost surely, 2^405026101 is an apocalyptic number.

It is an amenable number.

405026101 is a deficient number, since it is larger than the sum of its proper divisors (1).

405026101 is an equidigital number, since it uses as much as digits as its factorization.

405026101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 405026101 is about 20125.2602716089. The cubic root of 405026101 is about 739.8795159334.

Adding to 405026101 its reverse (101620504), we get a palindrome (506646605).

The spelling of 405026101 in words is "four hundred five million, twenty-six thousand, one hundred one".