145633261 has 8 divisors (see below), whose sum is σ = 147768320. Its totient is φ = 143505648.

The previous prime is 145633259. The next prime is 145633297. The reversal of 145633261 is 162336541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145633261 - 2¹ = 145633259 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 (145633231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46435 + ... + 49471.

It is an arithmetic number, because the mean of its divisors is an integer number (18471040).

Almost surely, 2^145633261 is an apocalyptic number.

It is an amenable number.

145633261 is a deficient number, since it is larger than the sum of its proper divisors (2135059).

145633261 is an equidigital number, since it uses as much as digits as its factorization.

145633261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723.

The product of its digits is 12960, while the sum is 31.

The square root of 145633261 is about 12067.8606637631. The cubic root of 145633261 is about 526.1224793938.

The spelling of 145633261 in words is "one hundred forty-five million, six hundred thirty-three thousand, two hundred sixty-one".