451337652 has 18 divisors (see below), whose sum is σ = 1140881378. Its totient is φ = 150445872.

The previous prime is 451337633. The next prime is 451337659. The reversal of 451337652 is 256733154.

It can be written as a sum of positive squares in only one way, i.e., 282441636 + 168896016 = 16806^2 + 12996^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×451337652² = 407411352225746208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 12537157 = 451337652 / (4 + 5 + 1 + 3 + 3 + 7 + 6 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451337659) 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, 6268543 + ... + 6268614.

Almost surely, 2^451337652 is an apocalyptic number.

It is an amenable number.

451337652 is an abundant number, since it is smaller than the sum of its proper divisors (689543726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451337652 is a wasteful number, since it uses less digits than its factorization.

451337652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12537167 (or 12537162 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 451337652 is about 21244.7088000754. The cubic root of 451337652 is about 767.0679815338.

The spelling of 451337652 in words is "four hundred fifty-one million, three hundred thirty-seven thousand, six hundred fifty-two".