145517380 has 12 divisors (see below), whose sum is σ = 305586540. Its totient is φ = 58206944.

The previous prime is 145517377. The next prime is 145517381. The reversal of 145517380 is 83715541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17239104 + 128278276 = 4152^2 + 11326^2 .

It is not an unprimeable number, because it can be changed into a prime (145517381) 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, 3637915 + ... + 3637954.

It is an arithmetic number, because the mean of its divisors is an integer number (25465545).

Almost surely, 2^145517380 is an apocalyptic number.

145517380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145517380 is an abundant number, since it is smaller than the sum of its proper divisors (160069160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145517380 is a wasteful number, since it uses less digits than its factorization.

145517380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275878 (or 7275876 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 145517380 is about 12063.0584844806. The cubic root of 145517380 is about 525.9828964064.

The spelling of 145517380 in words is "one hundred forty-five million, five hundred seventeen thousand, three hundred eighty".