153914021 has 2 divisors, whose sum is σ = 153914022. Its totient is φ = 153914020.

The previous prime is 153914011. The next prime is 153914053. The reversal of 153914021 is 120419351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149793121 + 4120900 = 12239^2 + 2030^2 .

It is a cyclic number.

It is not a de Polignac number, because 153914021 - 2⁶ = 153913957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153914011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76957010 + 76957011.

It is an arithmetic number, because the mean of its divisors is an integer number (76957011).

Almost surely, 2^153914021 is an apocalyptic number.

It is an amenable number.

153914021 is a deficient number, since it is larger than the sum of its proper divisors (1).

153914021 is an equidigital number, since it uses as much as digits as its factorization.

153914021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 153914021 is about 12406.2089697055. The cubic root of 153914021 is about 535.9110699810.

The spelling of 153914021 in words is "one hundred fifty-three million, nine hundred fourteen thousand, twenty-one".