1051397 has 2 divisors, whose sum is σ = 1051398. Its totient is φ = 1051396.

The previous prime is 1051373. The next prime is 1051409. The reversal of 1051397 is 7931501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863041 + 188356 = 929^2 + 434^2 .

It is an emirp because it is prime and its reverse (7931501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1051397 - 2⁶ = 1051333 is a prime.

It is a super-2 number, since 2×1051397² = 2210871303218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525698 + 525699.

It is an arithmetic number, because the mean of its divisors is an integer number (525699).

2^1051397 is an apocalyptic number.

It is an amenable number.

1051397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051397 is an equidigital number, since it uses as much as digits as its factorization.

1051397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1051397 is about 1025.3765162125. The cubic root of 1051397 is about 101.6846920770.

Adding to 1051397 its reverse (7931501), we get a palindrome (8982898).

The spelling of 1051397 in words is "one million, fifty-one thousand, three hundred ninety-seven".