145623957 has 16 divisors (see below), whose sum is σ = 201208320. Its totient is φ = 93585600.

The previous prime is 145623941. The next prime is 145623979. The reversal of 145623957 is 759326541.

It is not a de Polignac number, because 145623957 - 2⁴ = 145623941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145623917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22107 + ... + 27927.

It is an arithmetic number, because the mean of its divisors is an integer number (12575520).

Almost surely, 2^145623957 is an apocalyptic number.

It is an amenable number.

145623957 is a deficient number, since it is larger than the sum of its proper divisors (55584363).

145623957 is a wasteful number, since it uses less digits than its factorization.

145623957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6124.

The product of its digits is 226800, while the sum is 42.

The square root of 145623957 is about 12067.4751708881. The cubic root of 145623957 is about 526.1112751131. Note that the first 3 decimals are identical.

The spelling of 145623957 in words is "one hundred forty-five million, six hundred twenty-three thousand, nine hundred fifty-seven".