145357215 has 16 divisors (see below), whose sum is σ = 234405888. Its totient is φ = 76912416.

The previous prime is 145357213. The next prime is 145357271. The reversal of 145357215 is 512753541.

It is not a de Polignac number, because 145357215 - 2¹ = 145357213 is a prime.

It is a super-2 number, since 2×145357215² = 42257439905112450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145357213) 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 15 ways as a sum of consecutive naturals, for example, 36247 + ... + 40056.

It is an arithmetic number, because the mean of its divisors is an integer number (14650368).

Almost surely, 2^145357215 is an apocalyptic number.

145357215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145357215 is a deficient number, since it is larger than the sum of its proper divisors (89048673).

145357215 is a wasteful number, since it uses less digits than its factorization.

145357215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76438.

The product of its digits is 21000, while the sum is 33.

The square root of 145357215 is about 12056.4180003847. The cubic root of 145357215 is about 525.7898496434.

The spelling of 145357215 in words is "one hundred forty-five million, three hundred fifty-seven thousand, two hundred fifteen".