1511423 has 2 divisors, whose sum is σ = 1511424. Its totient is φ = 1511422.

The previous prime is 1511387. The next prime is 1511429. The reversal of 1511423 is 3241151.

It is a strong prime.

It is an emirp because it is prime and its reverse (3241151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1511423 - 2¹⁶ = 1445887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1511429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 755711 + 755712.

It is an arithmetic number, because the mean of its divisors is an integer number (755712).

2^1511423 is an apocalyptic number.

1511423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1511423 is an equidigital number, since it uses as much as digits as its factorization.

1511423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 1511423 is about 1229.3994468845. The cubic root of 1511423 is about 114.7612690917.

Adding to 1511423 its reverse (3241151), we get a palindrome (4752574).

The spelling of 1511423 in words is "one million, five hundred eleven thousand, four hundred twenty-three".