1375516531 has 16 divisors (see below), whose sum is σ = 1434646528. Its totient is φ = 1317384000.

The previous prime is 1375516517. The next prime is 1375516537. The reversal of 1375516531 is 1356155731.

It is a cyclic number.

It is not a de Polignac number, because 1375516531 - 2²¹ = 1373419379 is a prime.

It is a super-2 number, since 2×1375516531² = 3784091454108547922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375516537) 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, 2138896 + ... + 2139538.

It is an arithmetic number, because the mean of its divisors is an integer number (89665408).

Almost surely, 2^1375516531 is an apocalyptic number.

1375516531 is a deficient number, since it is larger than the sum of its proper divisors (59129997).

1375516531 is a wasteful number, since it uses less digits than its factorization.

1375516531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282.

The product of its digits is 47250, while the sum is 37.

The square root of 1375516531 is about 37087.9566840774. The cubic root of 1375516531 is about 1112.1292708414.

The spelling of 1375516531 in words is "one billion, three hundred seventy-five million, five hundred sixteen thousand, five hundred thirty-one".