145857401 has 2 divisors, whose sum is σ = 145857402. Its totient is φ = 145857400.

The previous prime is 145857389. The next prime is 145857409. The reversal of 145857401 is 104758541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141039376 + 4818025 = 11876^2 + 2195^2 .

It is an emirp because it is prime and its reverse (104758541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145857401 - 2¹⁰ = 145856377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145857409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72928700 + 72928701.

It is an arithmetic number, because the mean of its divisors is an integer number (72928701).

Almost surely, 2^145857401 is an apocalyptic number.

It is an amenable number.

145857401 is a deficient number, since it is larger than the sum of its proper divisors (1).

145857401 is an equidigital number, since it uses as much as digits as its factorization.

145857401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 145857401 is about 12077.1437434519. The cubic root of 145857401 is about 526.3922544095.

The spelling of 145857401 in words is "one hundred forty-five million, eight hundred fifty-seven thousand, four hundred one".