1522145531 has 8 divisors (see below), whose sum is σ = 1555277760. Its totient is φ = 1489176832.

The previous prime is 1522145509. The next prime is 1522145567. The reversal of 1522145531 is 1355412251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1522145531 - 2⁶ = 1522145467 is a prime.

It is a super-2 number, since 2×1522145531² = 4633854035086543922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1522145494 and 1522145503.

It is not an unprimeable number, because it can be changed into a prime (1522145831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21971 + ... + 59388.

It is an arithmetic number, because the mean of its divisors is an integer number (194409720).

Almost surely, 2^1522145531 is an apocalyptic number.

1522145531 is a deficient number, since it is larger than the sum of its proper divisors (33132229).

1522145531 is an equidigital number, since it uses as much as digits as its factorization.

1522145531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81765.

The product of its digits is 6000, while the sum is 29.

The square root of 1522145531 is about 39014.6835306914. The cubic root of 1522145531 is about 1150.3201455238.

Adding to 1522145531 its reverse (1355412251), we get a palindrome (2877557782).

The spelling of 1522145531 in words is "one billion, five hundred twenty-two million, one hundred forty-five thousand, five hundred thirty-one".