26550731 has 2 divisors, whose sum is σ = 26550732. Its totient is φ = 26550730.

The previous prime is 26550701. The next prime is 26550791. The reversal of 26550731 is 13705562.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26550731 is a prime.

It is a super-2 number, since 2×26550731² = 1409882633268722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 26550694 and 26550703.

It is not a weakly prime, because it can be changed into another prime (26550701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13275365 + 13275366.

It is an arithmetic number, because the mean of its divisors is an integer number (13275366).

Almost surely, 2^26550731 is an apocalyptic number.

26550731 is a deficient number, since it is larger than the sum of its proper divisors (1).

26550731 is an equidigital number, since it uses as much as digits as its factorization.

26550731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 26550731 is about 5152.7401448162. The cubic root of 26550731 is about 298.3267252645.

The spelling of 26550731 in words is "twenty-six million, five hundred fifty thousand, seven hundred thirty-one".