145222415 has 32 divisors (see below), whose sum is σ = 209200320. Its totient is φ = 95606784.

The previous prime is 145222393. The next prime is 145222463. The reversal of 145222415 is 514222541.

It is not a de Polignac number, because 145222415 - 2⁶ = 145222351 is a prime.

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, 17537 + ... + 24453.

It is an arithmetic number, because the mean of its divisors is an integer number (6537510).

Almost surely, 2^145222415 is an apocalyptic number.

145222415 is a deficient number, since it is larger than the sum of its proper divisors (63977905).

145222415 is a wasteful number, since it uses less digits than its factorization.

145222415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971.

The product of its digits is 3200, while the sum is 26.

The square root of 145222415 is about 12050.8263202156. The cubic root of 145222415 is about 525.6272653676.

Adding to 145222415 its reverse (514222541), we get a palindrome (659444956).

The spelling of 145222415 in words is "one hundred forty-five million, two hundred twenty-two thousand, four hundred fifteen".