402654545 has 4 divisors (see below), whose sum is σ = 483185460. Its totient is φ = 322123632.

The previous prime is 402654541. The next prime is 402654587. The reversal of 402654545 is 545456204.

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 208860304 + 193794241 = 14452^2 + 13921^2 .

It is a cyclic number.

It is not a de Polignac number, because 402654545 - 2² = 402654541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402654541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40265450 + ... + 40265459.

It is an arithmetic number, because the mean of its divisors is an integer number (120796365).

Almost surely, 2^402654545 is an apocalyptic number.

It is an amenable number.

402654545 is a deficient number, since it is larger than the sum of its proper divisors (80530915).

402654545 is an equidigital number, since it uses as much as digits as its factorization.

402654545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80530914.

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 402654545 is about 20066.2538855662. The cubic root of 402654545 is about 738.4326119826.

The spelling of 402654545 in words is "four hundred two million, six hundred fifty-four thousand, five hundred forty-five".