145524610621 has 16 divisors (see below), whose sum is σ = 166662241200. Its totient is φ = 125876487168.

The previous prime is 145524610559. The next prime is 145524610633. The reversal of 145524610621 is 126016425541.

It can be written as a sum of positive squares in 8 ways, for example, as 3236472100 + 142288138521 = 56890^2 + 377211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145524610621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145524610681) 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, 1387126 + ... + 1488343.

It is an arithmetic number, because the mean of its divisors is an integer number (10416390075).

Almost surely, 2^145524610621 is an apocalyptic number.

It is an amenable number.

145524610621 is a deficient number, since it is larger than the sum of its proper divisors (21137630579).

145524610621 is a wasteful number, since it uses less digits than its factorization.

145524610621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875728.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 145524610621 in words is "one hundred forty-five billion, five hundred twenty-four million, six hundred ten thousand, six hundred twenty-one".