145450215 has 32 divisors (see below), whose sum is σ = 273792960. Its totient is φ = 73009152.

The previous prime is 145450213. The next prime is 145450241. The reversal of 145450215 is 512054541.

145450215 is a `hidden beast` number, since 145 + 4 + 502 + 15 = 666.

It is not a de Polignac number, because 145450215 - 2¹ = 145450213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145450213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29394 + ... + 33983.

It is an arithmetic number, because the mean of its divisors is an integer number (8556030).

Almost surely, 2^145450215 is an apocalyptic number.

145450215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145450215 is a deficient number, since it is larger than the sum of its proper divisors (128342745).

145450215 is a wasteful number, since it uses less digits than its factorization.

145450215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63408 (or 63402 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 145450215 is about 12060.2742506130. The cubic root of 145450215 is about 525.9019597331.

The spelling of 145450215 in words is "one hundred forty-five million, four hundred fifty thousand, two hundred fifteen".