53604989 has 2 divisors, whose sum is σ = 53604990. Its totient is φ = 53604988.

The previous prime is 53604979. The next prime is 53604997. The reversal of 53604989 is 98940635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29888089 + 23716900 = 5467^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 53604989 - 2¹² = 53600893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53604959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26802494 + 26802495.

It is an arithmetic number, because the mean of its divisors is an integer number (26802495).

Almost surely, 2^53604989 is an apocalyptic number.

It is an amenable number.

53604989 is a deficient number, since it is larger than the sum of its proper divisors (1).

53604989 is an equidigital number, since it uses as much as digits as its factorization.

53604989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 53604989 is about 7321.5428018963. The cubic root of 53604989 is about 377.0524239519.

The spelling of 53604989 in words is "fifty-three million, six hundred four thousand, nine hundred eighty-nine".