1397200057 has 8 divisors (see below), whose sum is σ = 1524614112. Its totient is φ = 1269852000.

The previous prime is 1397200043. The next prime is 1397200069. The reversal of 1397200057 is 7500027931.

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 1397200057 - 2²³ = 1388811449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1397199995 and 1397200031.

It is not an unprimeable number, because it can be changed into a prime (1397200027) 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, 34693 + ... + 63229.

It is an arithmetic number, because the mean of its divisors is an integer number (190576764).

Almost surely, 2^1397200057 is an apocalyptic number.

It is an amenable number.

1397200057 is a deficient number, since it is larger than the sum of its proper divisors (127414055).

1397200057 is a wasteful number, since it uses less digits than its factorization.

1397200057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32999.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 1397200057 is about 37379.1393293104. The cubic root of 1397200057 is about 1117.9426669076.

Adding to 1397200057 its reverse (7500027931), we get a palindrome (8897227988).

The spelling of 1397200057 in words is "one billion, three hundred ninety-seven million, two hundred thousand, fifty-seven".