145243455 has 32 divisors (see below), whose sum is σ = 274752000. Its totient is φ = 64106112.

The previous prime is 145243447. The next prime is 145243477. The reversal of 145243455 is 554342541.

It is not a de Polignac number, because 145243455 - 2³ = 145243447 is a prime.

It is a super-2 number, since 2×145243455² = 42191322440674050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20805 + ... + 26894.

It is an arithmetic number, because the mean of its divisors is an integer number (8586000).

Almost surely, 2^145243455 is an apocalyptic number.

145243455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145243455 is a deficient number, since it is larger than the sum of its proper divisors (129508545).

145243455 is a wasteful number, since it uses less digits than its factorization.

145243455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47743.

The product of its digits is 48000, while the sum is 33.

The square root of 145243455 is about 12051.6992577810. The cubic root of 145243455 is about 525.6526486474.

Adding to 145243455 its reverse (554342541), we get a palindrome (699585996).

The spelling of 145243455 in words is "one hundred forty-five million, two hundred forty-three thousand, four hundred fifty-five".