145275641 has 24 divisors (see below), whose sum is σ = 177511680. Its totient is φ = 118389600.

The previous prime is 145275623. The next prime is 145275643. The reversal of 145275641 is 146572541.

It is not a de Polignac number, because 145275641 - 2¹⁸ = 145013497 is a prime.

It is a super-2 number, since 2×145275641² = 42210023735921762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145275643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88811 + ... + 90431.

It is an arithmetic number, because the mean of its divisors is an integer number (7396320).

Almost surely, 2^145275641 is an apocalyptic number.

It is an amenable number.

145275641 is a deficient number, since it is larger than the sum of its proper divisors (32236039).

145275641 is a wasteful number, since it uses less digits than its factorization.

145275641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725 (or 1718 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 145275641 is about 12053.0345141794. The cubic root of 145275641 is about 525.6914740494.

The spelling of 145275641 in words is "one hundred forty-five million, two hundred seventy-five thousand, six hundred forty-one".