1375852451 has 4 divisors (see below), whose sum is σ = 1375985304. Its totient is φ = 1375719600.

The previous prime is 1375852427. The next prime is 1375852469. The reversal of 1375852451 is 1542585731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1542585731 = 47 ⋅32820973.

It is a cyclic number.

It is not a de Polignac number, because 1375852451 - 2²⁶ = 1308743587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1375852399 and 1375852408.

It is not an unprimeable number, because it can be changed into a prime (1375852351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49445 + ... + 72086.

It is an arithmetic number, because the mean of its divisors is an integer number (343996326).

Almost surely, 2^1375852451 is an apocalyptic number.

1375852451 is a deficient number, since it is larger than the sum of its proper divisors (132853).

1375852451 is a wasteful number, since it uses less digits than its factorization.

1375852451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132852.

The product of its digits is 168000, while the sum is 41.

The square root of 1375852451 is about 37092.4851014326. The cubic root of 1375852451 is about 1112.2197958791.

The spelling of 1375852451 in words is "one billion, three hundred seventy-five million, eight hundred fifty-two thousand, four hundred fifty-one".