47577797 has 4 divisors (see below), whose sum is σ = 47749836. Its totient is φ = 47405760.

The previous prime is 47577791. The next prime is 47577811. The reversal of 47577797 is 79777574.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79777574 = 2 ⋅39888787.

It can be written as a sum of positive squares in 2 ways, for example, as 6220036 + 41357761 = 2494^2 + 6431^2 .

It is a cyclic number.

It is not a de Polignac number, because 47577797 - 2¹⁶ = 47512261 is a prime.

It is a super-3 number, since 3×47577797³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47577791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85604 + ... + 86157.

It is an arithmetic number, because the mean of its divisors is an integer number (11937459).

Almost surely, 2^47577797 is an apocalyptic number.

It is an amenable number.

47577797 is a deficient number, since it is larger than the sum of its proper divisors (172039).

47577797 is a wasteful number, since it uses less digits than its factorization.

47577797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172038.

The product of its digits is 3025260, while the sum is 53.

The square root of 47577797 is about 6897.6660545434. Note that the first 3 decimals coincide. The cubic root of 47577797 is about 362.3554321666.

The spelling of 47577797 in words is "forty-seven million, five hundred seventy-seven thousand, seven hundred ninety-seven".