145556215 has 12 divisors (see below), whose sum is σ = 203184936. Its totient is φ = 99809808.

The previous prime is 145556209. The next prime is 145556221. The reversal of 145556215 is 512655541.

145556215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145556209) and next prime (145556221).

It is not a de Polignac number, because 145556215 - 2¹³ = 145548023 is a prime.

It is a super-2 number, since 2×145556215² = 42373223450252450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296809 + ... + 297298.

It is an arithmetic number, because the mean of its divisors is an integer number (16932078).

Almost surely, 2^145556215 is an apocalyptic number.

145556215 is a deficient number, since it is larger than the sum of its proper divisors (57628721).

145556215 is an equidigital number, since it uses as much as digits as its factorization.

145556215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594126 (or 594119 counting only the distinct ones).

The product of its digits is 30000, while the sum is 34.

The square root of 145556215 is about 12064.6680435062. The cubic root of 145556215 is about 526.0296828657.

The spelling of 145556215 in words is "one hundred forty-five million, five hundred fifty-six thousand, two hundred fifteen".