1001523523 has 64 divisors (see below), whose sum is σ = 1438746624. Its totient is φ = 671616000.

The previous prime is 1001523491. The next prime is 1001523539. The reversal of 1001523523 is 3253251001.

It is not a de Polignac number, because 1001523523 - 2⁵ = 1001523491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001523494 and 1001523503.

It is not an unprimeable number, because it can be changed into a prime (1001523583) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 943413 + ... + 944473.

It is an arithmetic number, because the mean of its divisors is an integer number (22480416).

Almost surely, 2^1001523523 is an apocalyptic number.

1001523523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001523523 is a deficient number, since it is larger than the sum of its proper divisors (437223101).

1001523523 is a wasteful number, since it uses less digits than its factorization.

1001523523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1001523523 is about 31646.8564473630. The cubic root of 1001523523 is about 1000.5075833156.

Adding to 1001523523 its reverse (3253251001), we get a palindrome (4254774524).

The spelling of 1001523523 in words is "one billion, one million, five hundred twenty-three thousand, five hundred twenty-three".