145717455 has 64 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 66748416.

The previous prime is 145717427. The next prime is 145717459. The reversal of 145717455 is 554717541.

It is not a de Polignac number, because 145717455 - 2⁵ = 145717423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145717459) 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 63 ways as a sum of consecutive naturals, for example, 374401 + ... + 374789.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470).

It is the magic constant of a 663 × 663 magic square.

Almost surely, 2^145717455 is an apocalyptic number.

145717455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145717455 is a deficient number, since it is larger than the sum of its proper divisors (123176625).

145717455 is a wasteful number, since it uses less digits than its factorization.

145717455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 98000, while the sum is 39.

The square root of 145717455 is about 12071.3485162181. The cubic root of 145717455 is about 526.2238477722.

The spelling of 145717455 in words is "one hundred forty-five million, seven hundred seventeen thousand, four hundred fifty-five".