26157091 has 8 divisors (see below), whose sum is σ = 27691200. Its totient is φ = 24638760.

The previous prime is 26157073. The next prime is 26157107. The reversal of 26157091 is 19075162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26157091 - 2¹⁵ = 26124323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26157031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (3461400).

Almost surely, 2^26157091 is an apocalyptic number.

26157091 is a deficient number, since it is larger than the sum of its proper divisors (1534109).

26157091 is a wasteful number, since it uses less digits than its factorization.

26157091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 26157091 is about 5114.4003558580. The cubic root of 26157091 is about 296.8450521369.

The spelling of 26157091 in words is "twenty-six million, one hundred fifty-seven thousand, ninety-one".