145090797 has 4 divisors (see below), whose sum is σ = 193454400. Its totient is φ = 96727196.

The previous prime is 145090793. The next prime is 145090807. The reversal of 145090797 is 797090541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145090797 - 2² = 145090793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145090793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24181797 + ... + 24181802.

It is an arithmetic number, because the mean of its divisors is an integer number (48363600).

Almost surely, 2^145090797 is an apocalyptic number.

It is an amenable number.

145090797 is a deficient number, since it is larger than the sum of its proper divisors (48363603).

145090797 is an equidigital number, since it uses as much as digits as its factorization.

145090797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48363602.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 145090797 is about 12045.3641289917. The cubic root of 145090797 is about 525.4684218440.

The spelling of 145090797 in words is "one hundred forty-five million, ninety thousand, seven hundred ninety-seven".