145032621 has 8 divisors (see below), whose sum is σ = 198093504. Its totient is φ = 94330080.

The previous prime is 145032617. The next prime is 145032659. The reversal of 145032621 is 126230541.

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

It is not a de Polignac number, because 145032621 - 2² = 145032617 is a prime.

It is a super-2 number, since 2×145032621² = 42068922308259282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145032591 and 145032600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145032611) 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, 589441 + ... + 589686.

It is an arithmetic number, because the mean of its divisors is an integer number (24761688).

Almost surely, 2^145032621 is an apocalyptic number.

It is an amenable number.

145032621 is a deficient number, since it is larger than the sum of its proper divisors (53060883).

145032621 is a wasteful number, since it uses less digits than its factorization.

145032621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179171.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 145032621 is about 12042.9490159180. The cubic root of 145032621 is about 525.3981813734.

The spelling of 145032621 in words is "one hundred forty-five million, thirty-two thousand, six hundred twenty-one".