132778251 has 16 divisors (see below), whose sum is σ = 207062400. Its totient is φ = 83859624.

The previous prime is 132778229. The next prime is 132778253. The reversal of 132778251 is 152877231.

It is not a de Polignac number, because 132778251 - 2⁶ = 132778187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (132778253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128901 + ... + 129926.

It is an arithmetic number, because the mean of its divisors is an integer number (12941400).

Almost surely, 2^132778251 is an apocalyptic number.

132778251 is a deficient number, since it is larger than the sum of its proper divisors (74284149).

132778251 is a wasteful number, since it uses less digits than its factorization.

132778251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258855 (or 258849 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 132778251 is about 11522.9445455578. The cubic root of 132778251 is about 510.1630274656.

It can be divided in two parts, 13277 and 8251, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 132778251 in words is "one hundred thirty-two million, seven hundred seventy-eight thousand, two hundred fifty-one".