145232661 has 8 divisors (see below), whose sum is σ = 221306944. Its totient is φ = 82990080.

The previous prime is 145232651. The next prime is 145232663. The reversal of 145232661 is 166232541.

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

It is not a de Polignac number, because 145232661 - 2⁶ = 145232597 is a prime.

It is a super-2 number, since 2×145232661² = 42185051642281842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145232663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3457900 + ... + 3457941.

It is an arithmetic number, because the mean of its divisors is an integer number (27663368).

Almost surely, 2^145232661 is an apocalyptic number.

It is an amenable number.

145232661 is a deficient number, since it is larger than the sum of its proper divisors (76074283).

145232661 is an equidigital number, since it uses as much as digits as its factorization.

145232661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915851.

The product of its digits is 8640, while the sum is 30.

The square root of 145232661 is about 12051.2514287936. The cubic root of 145232661 is about 525.6396267520.

The spelling of 145232661 in words is "one hundred forty-five million, two hundred thirty-two thousand, six hundred sixty-one".