145415455 has 16 divisors (see below), whose sum is σ = 186278400. Its totient is φ = 108652320.

The previous prime is 145415449. The next prime is 145415477. The reversal of 145415455 is 554514541.

It is not a de Polignac number, because 145415455 - 2³ = 145415447 is a prime.

It is a super-2 number, since 2×145415455² = 42291309105714050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145415455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4035 + ... + 17524.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^145415455 is an apocalyptic number.

145415455 is a deficient number, since it is larger than the sum of its proper divisors (40862945).

145415455 is a wasteful number, since it uses less digits than its factorization.

145415455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21654.

The product of its digits is 40000, while the sum is 34.

The square root of 145415455 is about 12058.8330695802. The cubic root of 145415455 is about 525.8600626745.

Adding to 145415455 its reverse (554514541), we get a palindrome (699929996).

The spelling of 145415455 in words is "one hundred forty-five million, four hundred fifteen thousand, four hundred fifty-five".