945531 has 12 divisors (see below), whose sum is σ = 1410240. Its totient is φ = 609840.

The previous prime is 945521. The next prime is 945547. The reversal of 945531 is 135549.

It is not a de Polignac number, because 945531 - 2¹⁵ = 912763 is a prime.

It is a super-2 number, since 2×945531² = 1788057743922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 945495 and 945504.

It is not an unprimeable number, because it can be changed into a prime (945521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1416 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (117520).

2⁹⁴⁵⁵³¹ is an apocalyptic number.

945531 is a deficient number, since it is larger than the sum of its proper divisors (464709).

945531 is a wasteful number, since it uses less digits than its factorization.

945531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426 (or 3423 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 945531 is about 972.3841833350. The cubic root of 945531 is about 98.1503661414.

It can be divided in two parts, 94 and 5531, that added together give a square (5625 = 75²).

The spelling of 945531 in words is "nine hundred forty-five thousand, five hundred thirty-one".