145553101 has 2 divisors, whose sum is σ = 145553102. Its totient is φ = 145553100.

The previous prime is 145553077. The next prime is 145553123. The reversal of 145553101 is 101355541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 70123876 = 8685^2 + 8374^2 .

It is a cyclic number.

It is not a de Polignac number, because 145553101 - 2⁵ = 145553069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145553171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72776550 + 72776551.

It is an arithmetic number, because the mean of its divisors is an integer number (72776551).

Almost surely, 2^145553101 is an apocalyptic number.

It is an amenable number.

145553101 is a deficient number, since it is larger than the sum of its proper divisors (1).

145553101 is an equidigital number, since it uses as much as digits as its factorization.

145553101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 145553101 is about 12064.5389882913. The cubic root of 145553101 is about 526.0259315817.

The spelling of 145553101 in words is "one hundred forty-five million, five hundred fifty-three thousand, one hundred one".