45521402 has 4 divisors (see below), whose sum is σ = 68282106. Its totient is φ = 22760700.

The previous prime is 45521389. The next prime is 45521419. The reversal of 45521402 is 20412554.

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 only one way, i.e., 34703881 + 10817521 = 5891^2 + 3289^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11380349 + ... + 11380352.

Almost surely, 2^45521402 is an apocalyptic number.

45521402 is a deficient number, since it is larger than the sum of its proper divisors (22760704).

45521402 is a wasteful number, since it uses less digits than its factorization.

45521402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22760703.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45521402 is about 6746.9550168947. The cubic root of 45521402 is about 357.0578150735.

Adding to 45521402 its reverse (20412554), we get a palindrome (65933956).

The spelling of 45521402 in words is "forty-five million, five hundred twenty-one thousand, four hundred two".