145473757 has 8 divisors (see below), whose sum is σ = 170906400. Its totient is φ = 122075760.

The previous prime is 145473733. The next prime is 145473761. The reversal of 145473757 is 757374541.

It is a happy number.

145473757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145473757 is a prime.

It is a super-2 number, since 2×145473757² = 42325227951390098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145473767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508507 + ... + 508792.

It is an arithmetic number, because the mean of its divisors is an integer number (21363300).

Almost surely, 2^145473757 is an apocalyptic number.

It is an amenable number.

145473757 is a deficient number, since it is larger than the sum of its proper divisors (25432643).

145473757 is a wasteful number, since it uses less digits than its factorization.

145473757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017323.

The product of its digits is 411600, while the sum is 43.

The square root of 145473757 is about 12061.2502254120. The cubic root of 145473757 is about 525.9303316771.

The spelling of 145473757 in words is "one hundred forty-five million, four hundred seventy-three thousand, seven hundred fifty-seven".