45507481 has 4 divisors (see below), whose sum is σ = 45786832. Its totient is φ = 45228132.

The previous prime is 45507479. The next prime is 45507491. The reversal of 45507481 is 18470554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45507481 - 2¹ = 45507479 is a prime.

It is a super-2 number, since 2×45507481² = 4141861653930722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45507401) 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, 139431 + ... + 139756.

It is an arithmetic number, because the mean of its divisors is an integer number (11446708).

Almost surely, 2^45507481 is an apocalyptic number.

It is an amenable number.

45507481 is a deficient number, since it is larger than the sum of its proper divisors (279351).

45507481 is a wasteful number, since it uses less digits than its factorization.

45507481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279350.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 45507481 is about 6745.9232874381. The cubic root of 45507481 is about 357.0214138175.

The spelling of 45507481 in words is "forty-five million, five hundred seven thousand, four hundred eighty-one".