145552615 has 16 divisors (see below), whose sum is σ = 189969696. Its totient is φ = 106416000.

The previous prime is 145552613. The next prime is 145552619. The reversal of 145552615 is 516255541.

It is not a de Polignac number, because 145552615 - 2¹ = 145552613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145552613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4521 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (11873106).

Almost surely, 2^145552615 is an apocalyptic number.

145552615 is a deficient number, since it is larger than the sum of its proper divisors (44417081).

145552615 is a wasteful number, since it uses less digits than its factorization.

145552615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290.

The product of its digits is 30000, while the sum is 34.

The square root of 145552615 is about 12064.5188466014. The cubic root of 145552615 is about 526.0253461163.

It can be divided in two parts, 1455526 and 15, that added together give a palindrome (1455541).

The spelling of 145552615 in words is "one hundred forty-five million, five hundred fifty-two thousand, six hundred fifteen".