5401931 has 4 divisors (see below), whose sum is σ = 5451600. Its totient is φ = 5352264.

The previous prime is 5401901. The next prime is 5401951. The reversal of 5401931 is 1391045.

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: 1391045 = 5 ⋅278209.

It is a cyclic number.

It is not a de Polignac number, because 5401931 - 2⁶ = 5401867 is a prime.

It is a super-2 number, since 2×5401931² = 58361717057522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5401897 and 5401906.

It is not an unprimeable number, because it can be changed into a prime (5401901) 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, 24671 + ... + 24888.

It is an arithmetic number, because the mean of its divisors is an integer number (1362900).

Almost surely, 2^5401931 is an apocalyptic number.

5401931 is a deficient number, since it is larger than the sum of its proper divisors (49669).

5401931 is a wasteful number, since it uses less digits than its factorization.

5401931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49668.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 5401931 is about 2324.2054556342. The cubic root of 5401931 is about 175.4619739423.

Adding to 5401931 its reverse (1391045), we get a palindrome (6792976).

The spelling of 5401931 in words is "five million, four hundred one thousand, nine hundred thirty-one".