151561605 has 64 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 69755136.

The previous prime is 151561603. The next prime is 151561621. The reversal of 151561605 is 506165151.

It is not a de Polignac number, because 151561605 - 2¹ = 151561603 is a prime.

It is a super-2 number, since 2×151561605² = 45941840220352050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151561601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 210436 + ... + 211154.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^151561605 is an apocalyptic number.

151561605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151561605 is a deficient number, since it is larger than the sum of its proper divisors (127130235).

151561605 is a wasteful number, since it uses less digits than its factorization.

151561605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 151561605 is about 12311.0359027988. The cubic root of 151561605 is about 533.1667593950.

It can be divided in two parts, 15156 and 1605, that added together give a palindrome (16761).

The spelling of 151561605 in words is "one hundred fifty-one million, five hundred sixty-one thousand, six hundred five".