1475057491 has 16 divisors (see below), whose sum is σ = 1525182624. Its totient is φ = 1426028544.

The previous prime is 1475057443. The next prime is 1475057497. The reversal of 1475057491 is 1947505741.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1475057491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1475057497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829195 + ... + 830971.

It is an arithmetic number, because the mean of its divisors is an integer number (95323914).

Almost surely, 2^1475057491 is an apocalyptic number.

1475057491 is a deficient number, since it is larger than the sum of its proper divisors (50125133).

1475057491 is a wasteful number, since it uses less digits than its factorization.

1475057491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 1475057491 is about 38406.4772011180. The cubic root of 1475057491 is about 1138.3338466904. Note that the first 3 decimals are identical.

The spelling of 1475057491 in words is "one billion, four hundred seventy-five million, fifty-seven thousand, four hundred ninety-one".