1523235401 has 2 divisors, whose sum is σ = 1523235402. Its totient is φ = 1523235400.

The previous prime is 1523235341. The next prime is 1523235443. The reversal of 1523235401 is 1045323251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1486025401 + 37210000 = 38549^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523235401 - 2¹⁴ = 1523219017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523235451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761617700 + 761617701.

It is an arithmetic number, because the mean of its divisors is an integer number (761617701).

Almost surely, 2^1523235401 is an apocalyptic number.

It is an amenable number.

1523235401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523235401 is an equidigital number, since it uses as much as digits as its factorization.

1523235401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1523235401 is about 39028.6484649417. The cubic root of 1523235401 is about 1150.5946265750.

Adding to 1523235401 its reverse (1045323251), we get a palindrome (2568558652).

The spelling of 1523235401 in words is "one billion, five hundred twenty-three million, two hundred thirty-five thousand, four hundred one".