153022421 has 2 divisors, whose sum is σ = 153022422. Its totient is φ = 153022420.

The previous prime is 153022411. The next prime is 153022433. The reversal of 153022421 is 124220351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135466321 + 17556100 = 11639^2 + 4190^2 .

It is a cyclic number.

It is not a de Polignac number, because 153022421 - 2²⁶ = 85913557 is a prime.

It is a super-2 number, since 2×153022421² = 46831722657402482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 153022393 and 153022402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153022411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76511210 + 76511211.

It is an arithmetic number, because the mean of its divisors is an integer number (76511211).

Almost surely, 2^153022421 is an apocalyptic number.

It is an amenable number.

153022421 is a deficient number, since it is larger than the sum of its proper divisors (1).

153022421 is an equidigital number, since it uses as much as digits as its factorization.

153022421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 153022421 is about 12370.2231588602. The cubic root of 153022421 is about 534.8742488387.

Adding to 153022421 its reverse (124220351), we get a palindrome (277242772).

The spelling of 153022421 in words is "one hundred fifty-three million, twenty-two thousand, four hundred twenty-one".