45977509 has 4 divisors (see below), whose sum is σ = 46124716. Its totient is φ = 45830304.

The previous prime is 45977507. The next prime is 45977513. The reversal of 45977509 is 90577954.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5616900 + 40360609 = 2370^2 + 6353^2 .

It is a cyclic number.

It is not a de Polignac number, because 45977509 - 2¹ = 45977507 is a prime.

It is a super-2 number, since 2×45977509² = 4227862667690162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45977507) 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, 73134 + ... + 73759.

It is an arithmetic number, because the mean of its divisors is an integer number (11531179).

Almost surely, 2^45977509 is an apocalyptic number.

It is an amenable number.

45977509 is a deficient number, since it is larger than the sum of its proper divisors (147207).

45977509 is a wasteful number, since it uses less digits than its factorization.

45977509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147206.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 45977509 is about 6780.6717218871. The cubic root of 45977509 is about 358.2463816907.

The spelling of 45977509 in words is "forty-five million, nine hundred seventy-seven thousand, five hundred nine".