1572275445 has 24 divisors (see below), whose sum is σ = 2724041376. Its totient is φ = 774042048.

The previous prime is 1572275437. The next prime is 1572275449. The reversal of 1572275445 is 5445722751.

It is not a de Polignac number, because 1572275445 - 2³ = 1572275437 is a prime.

It is a super-4 number, since 4×1572275445⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1572275397 and 1572275406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572275449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307579 + ... + 312648.

It is an arithmetic number, because the mean of its divisors is an integer number (113501724).

Almost surely, 2^1572275445 is an apocalyptic number.

1572275445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1572275445 is a deficient number, since it is larger than the sum of its proper divisors (1151765931).

1572275445 is a wasteful number, since it uses less digits than its factorization.

1572275445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620261 (or 620248 counting only the distinct ones).

The product of its digits is 392000, while the sum is 42.

The square root of 1572275445 is about 39651.9286416184. The cubic root of 1572275445 is about 1162.8121044295.

The spelling of 1572275445 in words is "one billion, five hundred seventy-two million, two hundred seventy-five thousand, four hundred forty-five".