615146401 has 2 divisors, whose sum is σ = 615146402. Its totient is φ = 615146400.

The previous prime is 615146393. The next prime is 615146453. The reversal of 615146401 is 104641516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544989025 + 70157376 = 23345^2 + 8376^2 .

It is a cyclic number.

It is not a de Polignac number, because 615146401 - 2³ = 615146393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 615146401.

It is not a weakly prime, because it can be changed into another prime (615146501) by changing a digit.

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, 307573200 + 307573201.

It is an arithmetic number, because the mean of its divisors is an integer number (307573201).

Almost surely, 2^615146401 is an apocalyptic number.

It is an amenable number.

615146401 is a deficient number, since it is larger than the sum of its proper divisors (1).

615146401 is an equidigital number, since it uses as much as digits as its factorization.

615146401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 615146401 is about 24802.1450886813. The cubic root of 615146401 is about 850.4709735937.

Adding to 615146401 its reverse (104641516), we get a palindrome (719787917).

The spelling of 615146401 in words is "six hundred fifteen million, one hundred forty-six thousand, four hundred one".