45212131 has 8 divisors (see below), whose sum is σ = 46846800. Its totient is φ = 43582560.

The previous prime is 45212119. The next prime is 45212143. The reversal of 45212131 is 13121254.

It is an interprime number because it is at equal distance from previous prime (45212119) and next prime (45212143).

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 45212131 - 2⁷ = 45212003 is a prime.

It is a super-2 number, since 2×45212131² = 4088273579122322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45212099 and 45212108.

It is not an unprimeable number, because it can be changed into a prime (45213131) 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, 30925 + ... + 32353.

It is an arithmetic number, because the mean of its divisors is an integer number (5855850).

Almost surely, 2^45212131 is an apocalyptic number.

45212131 is a deficient number, since it is larger than the sum of its proper divisors (1634669).

45212131 is a wasteful number, since it uses less digits than its factorization.

45212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549.

The product of its digits is 240, while the sum is 19.

The square root of 45212131 is about 6723.9966537767. The cubic root of 45212131 is about 356.2473636411.

Adding to 45212131 its reverse (13121254), we get a palindrome (58333385).

The spelling of 45212131 in words is "forty-five million, two hundred twelve thousand, one hundred thirty-one".