145103855 has 32 divisors (see below), whose sum is σ = 198555840. Its totient is φ = 100915200.

The previous prime is 145103821. The next prime is 145103911. The reversal of 145103855 is 558301541.

It is not a de Polignac number, because 145103855 - 2⁸ = 145103599 is a prime.

It is a super-2 number, since 2×145103855² = 42110257471722050, 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, 361655 + ... + 362055.

It is an arithmetic number, because the mean of its divisors is an integer number (6204870).

Almost surely, 2^145103855 is an apocalyptic number.

145103855 is a deficient number, since it is larger than the sum of its proper divisors (53451985).

145103855 is a wasteful number, since it uses less digits than its factorization.

145103855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 145103855 is about 12045.9061510540. The cubic root of 145103855 is about 525.4841852165.

The spelling of 145103855 in words is "one hundred forty-five million, one hundred three thousand, eight hundred fifty-five".