29161557 has 12 divisors (see below), whose sum is σ = 42169920. Its totient is φ = 19419048.

The previous prime is 29161553. The next prime is 29161567. The reversal of 29161557 is 75516192.

It is not a de Polignac number, because 29161557 - 2² = 29161553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29161553) 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, 12294 + ... + 14472.

It is an arithmetic number, because the mean of its divisors is an integer number (3514160).

Almost surely, 2^29161557 is an apocalyptic number.

It is an amenable number.

29161557 is a deficient number, since it is larger than the sum of its proper divisors (13008363).

29161557 is a wasteful number, since it uses less digits than its factorization.

29161557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3669 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 29161557 is about 5400.1441647423. The cubic root of 29161557 is about 307.8011485606.

The spelling of 29161557 in words is "twenty-nine million, one hundred sixty-one thousand, five hundred fifty-seven".