145423455 has 16 divisors (see below), whose sum is σ = 233681760. Its totient is φ = 77224448.

The previous prime is 145423441. The next prime is 145423459. The reversal of 145423455 is 554324541.

It is a cyclic number.

It is not a de Polignac number, because 145423455 - 2⁶ = 145423391 is a prime.

It is a super-2 number, since 2×145423455² = 42295962528274050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145423459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17310 + ... + 24299.

It is an arithmetic number, because the mean of its divisors is an integer number (14605110).

Almost surely, 2^145423455 is an apocalyptic number.

145423455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145423455 is a deficient number, since it is larger than the sum of its proper divisors (88258305).

145423455 is a wasteful number, since it uses less digits than its factorization.

145423455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41850.

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

The square root of 145423455 is about 12059.1647720727. The cubic root of 145423455 is about 525.8697058571.

Adding to 145423455 its reverse (554324541), we get a palindrome (699747996).

The spelling of 145423455 in words is "one hundred forty-five million, four hundred twenty-three thousand, four hundred fifty-five".