133957001 has 2 divisors, whose sum is σ = 133957002. Its totient is φ = 133957000.

The previous prime is 133956989. The next prime is 133957027. The reversal of 133957001 is 100759331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133379401 + 577600 = 11549^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 133957001 - 2¹⁰ = 133955977 is a prime.

It is not a weakly prime, because it can be changed into another prime (133957091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66978500 + 66978501.

It is an arithmetic number, because the mean of its divisors is an integer number (66978501).

Almost surely, 2^133957001 is an apocalyptic number.

It is an amenable number.

133957001 is a deficient number, since it is larger than the sum of its proper divisors (1).

133957001 is an equidigital number, since it uses as much as digits as its factorization.

133957001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 133957001 is about 11573.9794798505. The cubic root of 133957001 is about 511.6682535692.

The spelling of 133957001 in words is "one hundred thirty-three million, nine hundred fifty-seven thousand, one".