47157249 has 8 divisors (see below), whose sum is σ = 63356832. Its totient is φ = 31197920.

The previous prime is 47157247. The next prime is 47157251. The reversal of 47157249 is 94275174.

It is an interprime number because it is at equal distance from previous prime (47157247) and next prime (47157251).

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 47157249 - 2¹ = 47157247 is a prime.

It is a super-2 number, since 2×47157249² = 4447612266496002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47157247) 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, 59604 + ... + 60389.

It is an arithmetic number, because the mean of its divisors is an integer number (7919604).

Almost surely, 2^47157249 is an apocalyptic number.

It is an amenable number.

47157249 is a deficient number, since it is larger than the sum of its proper divisors (16199583).

47157249 is a wasteful number, since it uses less digits than its factorization.

47157249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120127.

The product of its digits is 70560, while the sum is 39.

The square root of 47157249 is about 6867.1135857797. The cubic root of 47157249 is about 361.2846311232.

The spelling of 47157249 in words is "forty-seven million, one hundred fifty-seven thousand, two hundred forty-nine".