26455531 has 2 divisors, whose sum is σ = 26455532. Its totient is φ = 26455530.

The previous prime is 26455487. The next prime is 26455547. The reversal of 26455531 is 13555462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26455531 - 2¹³ = 26447339 is a prime.

It is a super-2 number, since 2×26455531² = 1399790240983922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26455493 and 26455502.

It is not a weakly prime, because it can be changed into another prime (26455591) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13227765 + 13227766.

It is an arithmetic number, because the mean of its divisors is an integer number (13227766).

Almost surely, 2^26455531 is an apocalyptic number.

26455531 is a deficient number, since it is larger than the sum of its proper divisors (1).

26455531 is an equidigital number, since it uses as much as digits as its factorization.

26455531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

The square root of 26455531 is about 5143.4940458797. The cubic root of 26455531 is about 297.9697392812.

The spelling of 26455531 in words is "twenty-six million, four hundred fifty-five thousand, five hundred thirty-one".