52153421 has 2 divisors, whose sum is σ = 52153422. Its totient is φ = 52153420.

The previous prime is 52153417. The next prime is 52153429. The reversal of 52153421 is 12435125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50965321 + 1188100 = 7139^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 52153421 - 2² = 52153417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52153429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26076710 + 26076711.

It is an arithmetic number, because the mean of its divisors is an integer number (26076711).

Almost surely, 2^52153421 is an apocalyptic number.

It is an amenable number.

52153421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52153421 is an equidigital number, since it uses as much as digits as its factorization.

52153421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 52153421 is about 7221.7325483571. The cubic root of 52153421 is about 373.6178357695.

Adding to 52153421 its reverse (12435125), we get a palindrome (64588546).

The spelling of 52153421 in words is "fifty-two million, one hundred fifty-three thousand, four hundred twenty-one".