145057405 has 8 divisors (see below), whose sum is σ = 174330072. Its totient is φ = 115871808.

The previous prime is 145057403. The next prime is 145057489. The reversal of 145057405 is 504750541.

It can be written as a sum of positive squares in 4 ways, for example, as 110271001 + 34786404 = 10501^2 + 5898^2 .

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 145057405 - 2¹ = 145057403 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 (145057403) 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, 18042 + ... + 24811.

It is an arithmetic number, because the mean of its divisors is an integer number (21791259).

Almost surely, 2^145057405 is an apocalyptic number.

It is an amenable number.

145057405 is a deficient number, since it is larger than the sum of its proper divisors (29272667).

145057405 is an equidigital number, since it uses as much as digits as its factorization.

145057405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43535.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 145057405 is about 12043.9779558085. The cubic root of 145057405 is about 525.4281073463.

The spelling of 145057405 in words is "one hundred forty-five million, fifty-seven thousand, four hundred five".