45487951 has 4 divisors (see below), whose sum is σ = 47465712. Its totient is φ = 43510192.

The previous prime is 45487927. The next prime is 45487991. The reversal of 45487951 is 15978454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45487951 - 2²¹ = 43390799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45487898 and 45487907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45487991) 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, 988846 + ... + 988891.

It is an arithmetic number, because the mean of its divisors is an integer number (11866428).

Almost surely, 2^45487951 is an apocalyptic number.

45487951 is a deficient number, since it is larger than the sum of its proper divisors (1977761).

45487951 is a wasteful number, since it uses less digits than its factorization.

45487951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977760.

The product of its digits is 201600, while the sum is 43.

The square root of 45487951 is about 6744.4755911783. The cubic root of 45487951 is about 356.9703333815.

The spelling of 45487951 in words is "forty-five million, four hundred eighty-seven thousand, nine hundred fifty-one".