161627245 has 32 divisors (see below), whose sum is σ = 223388928. Its totient is φ = 111203328.

The previous prime is 161627201. The next prime is 161627251. The reversal of 161627245 is 542726161.

161627245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161627245 - 2¹¹ = 161625197 is a prime.

It is a super-2 number, since 2×161627245² = 52246732652580050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161627245.

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, 117552 + ... + 118918.

It is an arithmetic number, because the mean of its divisors is an integer number (6980904).

Almost surely, 2^161627245 is an apocalyptic number.

It is an amenable number.

161627245 is a deficient number, since it is larger than the sum of its proper divisors (61761683).

161627245 is a wasteful number, since it uses less digits than its factorization.

161627245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its digits is 20160, while the sum is 34.

The square root of 161627245 is about 12713.2704289652. The cubic root of 161627245 is about 544.7177451568.

It can be divided in two parts, 16 and 1627245, that added together give a palindrome (1627261).

The spelling of 161627245 in words is "one hundred sixty-one million, six hundred twenty-seven thousand, two hundred forty-five".