1523475049 has 4 divisors (see below), whose sum is σ = 1549296720. Its totient is φ = 1497653380.

The previous prime is 1523475001. The next prime is 1523475053. The reversal of 1523475049 is 9405743251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9405743251 = 16703 ⋅563117.

It is a cyclic number.

It is not a de Polignac number, because 1523475049 - 2⁷ = 1523474921 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523475649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12910747 + ... + 12910864.

It is an arithmetic number, because the mean of its divisors is an integer number (387324180).

Almost surely, 2^1523475049 is an apocalyptic number.

It is an amenable number.

1523475049 is a deficient number, since it is larger than the sum of its proper divisors (25821671).

1523475049 is an equidigital number, since it uses as much as digits as its factorization.

1523475049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25821670.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1523475049 is about 39031.7184991899. The cubic root of 1523475049 is about 1150.6549637672.

The spelling of 1523475049 in words is "one billion, five hundred twenty-three million, four hundred seventy-five thousand, forty-nine".