145822407 has 4 divisors (see below), whose sum is σ = 194429880. Its totient is φ = 97214936.

The previous prime is 145822403. The next prime is 145822409. The reversal of 145822407 is 704228541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704228541 = 3 ⋅234742847.

It is a cyclic number.

It is not a de Polignac number, because 145822407 - 2² = 145822403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145822403) 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, 24303732 + ... + 24303737.

It is an arithmetic number, because the mean of its divisors is an integer number (48607470).

Almost surely, 2^145822407 is an apocalyptic number.

145822407 is a deficient number, since it is larger than the sum of its proper divisors (48607473).

145822407 is an equidigital number, since it uses as much as digits as its factorization.

145822407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48607472.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 145822407 is about 12075.6948868378. The cubic root of 145822407 is about 526.3501538287.

The spelling of 145822407 in words is "one hundred forty-five million, eight hundred twenty-two thousand, four hundred seven".