145601407 has 4 divisors (see below), whose sum is σ = 166401616. Its totient is φ = 124801200.

The previous prime is 145601387. The next prime is 145601411. The reversal of 145601407 is 704106541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704106541 = 19 ⋅37058239.

It is a cyclic number.

It is not a de Polignac number, because 145601407 - 2²³ = 137212799 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 (145601497) 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, 10400094 + ... + 10400107.

It is an arithmetic number, because the mean of its divisors is an integer number (41600404).

Almost surely, 2^145601407 is an apocalyptic number.

145601407 is a deficient number, since it is larger than the sum of its proper divisors (20800209).

145601407 is an equidigital number, since it uses as much as digits as its factorization.

145601407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800208.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 145601407 is about 12066.5408050526. The cubic root of 145601407 is about 526.0841174441.

Adding to 145601407 its reverse (704106541), we get a palindrome (849707948).

The spelling of 145601407 in words is "one hundred forty-five million, six hundred one thousand, four hundred seven".