145252455 has 16 divisors (see below), whose sum is σ = 232620000. Its totient is φ = 77395968.

The previous prime is 145252447. The next prime is 145252483. The reversal of 145252455 is 554252541.

It is not a de Polignac number, because 145252455 - 2³ = 145252447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14859 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (14538750).

Almost surely, 2^145252455 is an apocalyptic number.

145252455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145252455 is a deficient number, since it is larger than the sum of its proper divisors (87367545).

145252455 is a wasteful number, since it uses less digits than its factorization.

145252455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010.

The product of its digits is 40000, while the sum is 33.

The square root of 145252455 is about 12052.0726433257. The cubic root of 145252455 is about 525.6635057657.

The spelling of 145252455 in words is "one hundred forty-five million, two hundred fifty-two thousand, four hundred fifty-five".