145880441 has 4 divisors (see below), whose sum is σ = 166720512. Its totient is φ = 125040372.

The previous prime is 145880437. The next prime is 145880443. The reversal of 145880441 is 144088541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144088541 = 2423 ⋅59467.

It is a cyclic number.

It is not a de Polignac number, because 145880441 - 2² = 145880437 is a prime.

It is a super-2 number, since 2×145880441² = 42562206132708962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145880443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10420025 + ... + 10420038.

It is an arithmetic number, because the mean of its divisors is an integer number (41680128).

Almost surely, 2^145880441 is an apocalyptic number.

It is an amenable number.

145880441 is a deficient number, since it is larger than the sum of its proper divisors (20840071).

145880441 is an equidigital number, since it uses as much as digits as its factorization.

145880441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20840070.

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 145880441 is about 12078.0975737075. The cubic root of 145880441 is about 526.4199696961.

The spelling of 145880441 in words is "one hundred forty-five million, eight hundred eighty thousand, four hundred forty-one".