481151997 has 6 divisors (see below), whose sum is σ = 694997342. Its totient is φ = 320767992.

The previous prime is 481151989. The next prime is 481152031. The reversal of 481151997 is 799151184.

It is a happy number.

481151997 is a `hidden beast` number, since 48 + 1 + 1 + 519 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 479872836 + 1279161 = 21906^2 + 1131^2 .

It is not a de Polignac number, because 481151997 - 2³ = 481151989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481151917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26730658 + ... + 26730675.

Almost surely, 2^481151997 is an apocalyptic number.

It is an amenable number.

481151997 is a deficient number, since it is larger than the sum of its proper divisors (213845345).

481151997 is a wasteful number, since it uses less digits than its factorization.

481151997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53461339 (or 53461336 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 481151997 is about 21935.1771590749. The cubic root of 481151997 is about 783.5994049918.

The spelling of 481151997 in words is "four hundred eighty-one million, one hundred fifty-one thousand, nine hundred ninety-seven".