145542226 has 8 divisors (see below), whose sum is σ = 218833164. Its totient is φ = 72597840.

The previous prime is 145542197. The next prime is 145542227. The reversal of 145542226 is 622245541.

It can be written as a sum of positive squares in 2 ways, for example, as 92179201 + 53363025 = 9601^2 + 7305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×145542226³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145542227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85585 + ... + 87268.

Almost surely, 2^145542226 is an apocalyptic number.

145542226 is a deficient number, since it is larger than the sum of its proper divisors (73290938).

145542226 is a wasteful number, since it uses less digits than its factorization.

145542226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173276.

The product of its digits is 19200, while the sum is 31.

The square root of 145542226 is about 12064.0882788547. The cubic root of 145542226 is about 526.0128305795.

Adding to 145542226 its reverse (622245541), we get a palindrome (767787767).

It can be divided in two parts, 1455 and 42226, that added together give a square (43681 = 209²).

The spelling of 145542226 in words is "one hundred forty-five million, five hundred forty-two thousand, two hundred twenty-six".