545909402 has 4 divisors (see below), whose sum is σ = 818864106. Its totient is φ = 272954700.

The previous prime is 545909327. The next prime is 545909431. The reversal of 545909402 is 204909545.

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., 542843401 + 3066001 = 23299^2 + 1751^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136477349 + ... + 136477352.

Almost surely, 2^545909402 is an apocalyptic number.

545909402 is a deficient number, since it is larger than the sum of its proper divisors (272954704).

545909402 is a wasteful number, since it uses less digits than its factorization.

545909402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272954703.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 545909402 is about 23364.7041924352. The cubic root of 545909402 is about 817.2849934124.

The spelling of 545909402 in words is "five hundred forty-five million, nine hundred nine thousand, four hundred two".