1375475537 has 2 divisors, whose sum is σ = 1375475538. Its totient is φ = 1375475536.

The previous prime is 1375475527. The next prime is 1375475551. The reversal of 1375475537 is 7355745731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 867243601 + 508231936 = 29449^2 + 22544^2 .

It is an emirp because it is prime and its reverse (7355745731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1375475537 - 2¹⁸ = 1375213393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1375475491 and 1375475500.

It is not a weakly prime, because it can be changed into another prime (1375475527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687737768 + 687737769.

It is an arithmetic number, because the mean of its divisors is an integer number (687737769).

Almost surely, 2^1375475537 is an apocalyptic number.

It is an amenable number.

1375475537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375475537 is an equidigital number, since it uses as much as digits as its factorization.

1375475537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1543500, while the sum is 47.

The square root of 1375475537 is about 37087.4040207723. The cubic root of 1375475537 is about 1112.1182226087.

The spelling of 1375475537 in words is "one billion, three hundred seventy-five million, four hundred seventy-five thousand, five hundred thirty-seven".