1461445257 has 16 divisors (see below), whose sum is σ = 1995781568. Its totient is φ = 950745600.

The previous prime is 1461445243. The next prime is 1461445289. The reversal of 1461445257 is 7525441641.

It is not a de Polignac number, because 1461445257 - 2¹⁰ = 1461444233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1461445217) 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, 150213 + ... + 159645.

It is an arithmetic number, because the mean of its divisors is an integer number (124736348).

Almost surely, 2^1461445257 is an apocalyptic number.

It is an amenable number.

1461445257 is a deficient number, since it is larger than the sum of its proper divisors (534336311).

1461445257 is a wasteful number, since it uses less digits than its factorization.

1461445257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680.

The product of its digits is 134400, while the sum is 39.

The square root of 1461445257 is about 38228.8537233331. The cubic root of 1461445257 is about 1134.8214011255.

Adding to 1461445257 its reverse (7525441641), we get a palindrome (8986886898).

The spelling of 1461445257 in words is "one billion, four hundred sixty-one million, four hundred forty-five thousand, two hundred fifty-seven".