133137851 has 30 divisors (see below), whose sum is σ = 171858156. Its totient is φ = 102282600.

The previous prime is 133137841. The next prime is 133137881. The reversal of 133137851 is 158731331.

It is not a de Polignac number, because 133137851 - 2⁶ = 133137787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133137821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1875146 + ... + 1875216.

Almost surely, 2^133137851 is an apocalyptic number.

133137851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133137851 is a deficient number, since it is larger than the sum of its proper divisors (38720305).

133137851 is an frugal number, since it uses more digits than its factorization.

133137851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 89 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 133137851 is about 11538.5376456464. The cubic root of 133137851 is about 510.6231662229.

The spelling of 133137851 in words is "one hundred thirty-three million, one hundred thirty-seven thousand, eight hundred fifty-one".