29157961 has 16 divisors (see below), whose sum is σ = 34587904. Its totient is φ = 24058944.

The previous prime is 29157943. The next prime is 29157967. The reversal of 29157961 is 16975192.

It is not a de Polignac number, because 29157961 - 2⁹ = 29157449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29157967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26131 + ... + 27223.

It is an arithmetic number, because the mean of its divisors is an integer number (2161744).

Almost surely, 2^29157961 is an apocalyptic number.

It is an amenable number.

29157961 is a deficient number, since it is larger than the sum of its proper divisors (5429943).

29157961 is a wasteful number, since it uses less digits than its factorization.

29157961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its digits is 34020, while the sum is 40.

The square root of 29157961 is about 5399.8112004032. The cubic root of 29157961 is about 307.7884960762.

The spelling of 29157961 in words is "twenty-nine million, one hundred fifty-seven thousand, nine hundred sixty-one".