133770157 has 4 divisors (see below), whose sum is σ = 135094716. Its totient is φ = 132445600.

The previous prime is 133770137. The next prime is 133770179. The reversal of 133770157 is 751077331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68790436 + 64979721 = 8294^2 + 8061^2 .

It is a cyclic number.

It is not a de Polignac number, because 133770157 - 2¹⁵ = 133737389 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 (133770137) 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, 662128 + ... + 662329.

It is an arithmetic number, because the mean of its divisors is an integer number (33773679).

Almost surely, 2^133770157 is an apocalyptic number.

It is an amenable number.

133770157 is a deficient number, since it is larger than the sum of its proper divisors (1324559).

133770157 is a wasteful number, since it uses less digits than its factorization.

133770157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324558.

The product of its (nonzero) digits is 15435, while the sum is 34.

The square root of 133770157 is about 11565.9049364933. The cubic root of 133770157 is about 511.4302502653.

The spelling of 133770157 in words is "one hundred thirty-three million, seven hundred seventy thousand, one hundred fifty-seven".