145409883 has 4 divisors (see below), whose sum is σ = 193879848. Its totient is φ = 96939920.

The previous prime is 145409881. The next prime is 145409893. The reversal of 145409883 is 388904541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145409883 - 2¹ = 145409881 is a prime.

It is a super-2 number, since 2×145409883² = 42288068148147378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145409881) 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, 24234978 + ... + 24234983.

It is an arithmetic number, because the mean of its divisors is an integer number (48469962).

Almost surely, 2^145409883 is an apocalyptic number.

145409883 is a deficient number, since it is larger than the sum of its proper divisors (48469965).

145409883 is an equidigital number, since it uses as much as digits as its factorization.

145409883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48469964.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 145409883 is about 12058.6020334034. The cubic root of 145409883 is about 525.8533459889.

The spelling of 145409883 in words is "one hundred forty-five million, four hundred nine thousand, eight hundred eighty-three".