133526801 has 2 divisors, whose sum is σ = 133526802. Its totient is φ = 133526800.

The previous prime is 133526761. The next prime is 133526803. The reversal of 133526801 is 108625331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78411025 + 55115776 = 8855^2 + 7424^2 .

It is a cyclic number.

It is not a de Polignac number, because 133526801 - 2¹⁴ = 133510417 is a prime.

Together with 133526803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133526803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66763400 + 66763401.

It is an arithmetic number, because the mean of its divisors is an integer number (66763401).

Almost surely, 2^133526801 is an apocalyptic number.

It is an amenable number.

133526801 is a deficient number, since it is larger than the sum of its proper divisors (1).

133526801 is an equidigital number, since it uses as much as digits as its factorization.

133526801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 133526801 is about 11555.3797427865. The cubic root of 133526801 is about 511.1199290102.

The spelling of 133526801 in words is "one hundred thirty-three million, five hundred twenty-six thousand, eight hundred one".