145422553 has 2 divisors, whose sum is σ = 145422554. Its totient is φ = 145422552.

The previous prime is 145422547. The next prime is 145422601. The reversal of 145422553 is 355224541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135769104 + 9653449 = 11652^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 145422553 - 2⁵ = 145422521 is a prime.

It is a super-2 number, since 2×145422553² = 42295437842075618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145422503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72711276 + 72711277.

It is an arithmetic number, because the mean of its divisors is an integer number (72711277).

Almost surely, 2^145422553 is an apocalyptic number.

It is an amenable number.

145422553 is a deficient number, since it is larger than the sum of its proper divisors (1).

145422553 is an equidigital number, since it uses as much as digits as its factorization.

145422553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 145422553 is about 12059.1273730731. The cubic root of 145422553 is about 525.8686186060.

The spelling of 145422553 in words is "one hundred forty-five million, four hundred twenty-two thousand, five hundred fifty-three".