145451405 has 32 divisors (see below), whose sum is σ = 204467328. Its totient is φ = 98150400.

The previous prime is 145451399. The next prime is 145451437. The reversal of 145451405 is 504154541.

145451405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145451405 - 2²⁰ = 144402829 is a prime.

It is a super-2 number, since 2×145451405² = 42312222432948050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67190 + ... + 69320.

It is an arithmetic number, because the mean of its divisors is an integer number (6389604).

Almost surely, 2^145451405 is an apocalyptic number.

It is an amenable number.

145451405 is a deficient number, since it is larger than the sum of its proper divisors (59015923).

145451405 is a wasteful number, since it uses less digits than its factorization.

145451405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 145451405 is about 12060.3235860403. The cubic root of 145451405 is about 525.9033939504.

The spelling of 145451405 in words is "one hundred forty-five million, four hundred fifty-one thousand, four hundred five".