133379557 has 4 divisors (see below), whose sum is σ = 133478496. Its totient is φ = 133280620.

The previous prime is 133379539. The next prime is 133379573. The reversal of 133379557 is 755973331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133379557 - 2¹⁵ = 133346789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133779557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47419 + ... + 50152.

It is an arithmetic number, because the mean of its divisors is an integer number (33369624).

Almost surely, 2^133379557 is an apocalyptic number.

It is an amenable number.

133379557 is a deficient number, since it is larger than the sum of its proper divisors (98939).

133379557 is an equidigital number, since it uses as much as digits as its factorization.

133379557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98938.

The product of its digits is 297675, while the sum is 43.

The square root of 133379557 is about 11549.0067538295. The cubic root of 133379557 is about 510.9319841611.

The spelling of 133379557 in words is "one hundred thirty-three million, three hundred seventy-nine thousand, five hundred fifty-seven".