145520530551 has 24 divisors (see below), whose sum is σ = 231408811920. Its totient is φ = 87385132800.

The previous prime is 145520530531. The next prime is 145520530577. The reversal of 145520530551 is 155035025541.

145520530551 is a `hidden beast` number, since 1 + 4 + 5 + 52 + 0 + 53 + 0 + 551 = 666.

145520530551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145520530551 - 2⁷ = 145520530423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520530531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6731890 + ... + 6753471.

It is an arithmetic number, because the mean of its divisors is an integer number (9642033830).

Almost surely, 2^145520530551 is an apocalyptic number.

145520530551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145520530551 is a deficient number, since it is larger than the sum of its proper divisors (85888281369).

145520530551 is a wasteful number, since it uses less digits than its factorization.

145520530551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13485487 (or 13485484 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 145520530551 in words is "one hundred forty-five billion, five hundred twenty million, five hundred thirty thousand, five hundred fifty-one".