133061523 has 16 divisors (see below), whose sum is σ = 207707136. Its totient is φ = 74180160.

The previous prime is 133061519. The next prime is 133061543. The reversal of 133061523 is 325160331.

It is a happy number.

It is not a de Polignac number, because 133061523 - 2² = 133061519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133061493 and 133061502.

It is not an unprimeable number, because it can be changed into a prime (133061543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76411 + ... + 78132.

It is an arithmetic number, because the mean of its divisors is an integer number (12981696).

Almost surely, 2^133061523 is an apocalyptic number.

133061523 is a deficient number, since it is larger than the sum of its proper divisors (74645613).

133061523 is a wasteful number, since it uses less digits than its factorization.

133061523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154594.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 133061523 is about 11535.2296466087. The cubic root of 133061523 is about 510.5255673928.

The spelling of 133061523 in words is "one hundred thirty-three million, sixty-one thousand, five hundred twenty-three".