634042501 has 2 divisors, whose sum is σ = 634042502. Its totient is φ = 634042500.

The previous prime is 634042481. The next prime is 634042511. The reversal of 634042501 is 105240436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368678401 + 265364100 = 19201^2 + 16290^2 .

It is a cyclic number.

It is not a de Polignac number, because 634042501 - 2¹¹ = 634040453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634042511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317021250 + 317021251.

It is an arithmetic number, because the mean of its divisors is an integer number (317021251).

Almost surely, 2^634042501 is an apocalyptic number.

It is an amenable number.

634042501 is a deficient number, since it is larger than the sum of its proper divisors (1).

634042501 is an equidigital number, since it uses as much as digits as its factorization.

634042501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 634042501 is about 25180.2005750550. The cubic root of 634042501 is about 859.0915686909.

Adding to 634042501 its reverse (105240436), we get a palindrome (739282937).

It can be divided in two parts, 6340 and 42501, that added together give a square (48841 = 221²).

The spelling of 634042501 in words is "six hundred thirty-four million, forty-two thousand, five hundred one".