1551113 has 2 divisors, whose sum is σ = 1551114. Its totient is φ = 1551112.

The previous prime is 1551107. The next prime is 1551133. The reversal of 1551113 is 3111551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 906304 + 644809 = 952^2 + 803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551113 - 2⁶ = 1551049 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1551091 and 1551100.

It is not a weakly prime, because it can be changed into another prime (1551133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775556 + 775557.

It is an arithmetic number, because the mean of its divisors is an integer number (775557).

2^1551113 is an apocalyptic number.

It is an amenable number.

1551113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551113 is an equidigital number, since it uses as much as digits as its factorization.

1551113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75, while the sum is 17.

The square root of 1551113 is about 1245.4368711420. The cubic root of 1551113 is about 115.7571465032.

Adding to 1551113 its reverse (3111551), we get a palindrome (4662664).

The spelling of 1551113 in words is "one million, five hundred fifty-one thousand, one hundred thirteen".