145527818 has 4 divisors (see below), whose sum is σ = 218291730. Its totient is φ = 72763908.

The previous prime is 145527799. The next prime is 145527847. The reversal of 145527818 is 818725541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818725541 = 9311 ⋅87931.

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 253009 = 12053^2 + 503^2 .

It is a super-2 number, since 2×145527818² = 42356691623682248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36381953 + ... + 36381956.

Almost surely, 2^145527818 is an apocalyptic number.

145527818 is a deficient number, since it is larger than the sum of its proper divisors (72763912).

145527818 is an equidigital number, since it uses as much as digits as its factorization.

145527818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72763911.

The product of its digits is 89600, while the sum is 41.

The square root of 145527818 is about 12063.4911199039. The cubic root of 145527818 is about 525.9954724029.

The spelling of 145527818 in words is "one hundred forty-five million, five hundred twenty-seven thousand, eight hundred eighteen".